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# CollegePhysics PHY122

CSU Pomona

GPA 3.71

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This 17 page Class Notes was uploaded by Loraine Bauch II on Saturday October 3, 2015. The Class Notes belongs to PHY122 at California State Polytechnic University taught by MahmoodHeyrat in Fall. Since its upload, it has received 130 views. For similar materials see /class/218362/phy122-california-state-polytechnic-university in Physics 2 at California State Polytechnic University.

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Date Created: 10/03/15

Exam N arne 1 According to the law of reflection of light the angle of incidence is A smaller than the angle of reflection B equal to the angle of reflection C greater than the angle of reflection 2 Wthh of the following sets of diaracteristics describes the image formed by a plane mirror A virtual and upright B real and upright C real and inverted D virtual and inverted E All of the previous statements can be correct 3 The image formed in a plane mirror is A at the same distance in front of the mirror as the object is in front of the mirror B at a shorter distance in front of the mirror than the distance that the object is in front of the mirror C at the same distance behind the mirror as the object is in front of the mirror D at a larger distance behind the mirror than the distance the object is in front of the mirror E at a shorter distance behind the mirror than the distance the object is in front of the mirror 4 The angle of reflection is the angle between A the incidence ray and the surface of the mirror B the incident ray and the normal drawn at the point where this ray meets the mirror C the reflected ray and the incident ray D the reflected ray and the normal drawn at the point where this ray meets the mirror E the reflected ray and the surface of the mirror 5 How tall must a plane rnirror be in order for you to be able to see your full image in it A half of your height B the same height as you C twice your height D 14 of your height E 34 of your height 6 Wthh one of the following is the correct number for the magnification of a plane mirror A 10 B 20 C 05 D 025 E 15 7 The perpendicular distance from the center of curvature to a spherical mirror is called A the radius of curvature B the focal length C D twice the radius of curvature E the center of curvature the perpendicular axis 8 The principal axis is the A straight line drawn from the center of curvature to any point of the mirror B straight line drawn from the center of curvature to a point on the outer edge of the mirror C straight line drawn from the center of curvature to the mid point of the mirror D straight line joining any two points on the mirror E None of the other answers given is correct 9 To burn a hole in a piece of paper using light from the Sun whid mirror would work the best 9 A Plane B C Convex D All of the given answers would work equally as well E None of the given answers would burn a hole 10 Wthh of the following is a correct statement 10 A A concave mirror always produces a real image B A concave mirror always produces a virtual image C D A convex mirror always produces a real image E All of the previous statements can be correct A convex mirror always produces a virtual image 11 If the magnification of a mirror is negative whid of the following is correct 11 A The image is inverted and the mirror is convex B The image is inverted and the mirror is concave C The image is upright and the mirror is convex D All of the previous answers can be correct E None of the previous answers is correct 12 An object is placed in front of a convex mirror at a distance larger than twice the focal length of 12 the mirror The image will appear A in front of the mirror B upright and enlarged C D upright and reduced E inverted and enlarged inverted and reduced 13 An object is placed in front of a convex mirror at a distance closer than the focal length of the 13 mirror The image will appear A upright and enlarged B inverted and reduced C inverted and enlarged D upright and reduced E behind the mirror 14 The image formed by a concave mirror when the object is placed between the mirror and the 14 focal point has the following characteristics A virtual upright reduced image distance is smaller than object distance B virtual inverted reduced image distance is smaller than object distance C real upright enlarged image distance is larger than object distance D virtual upright enlarged image distance is larger than object distance E real inverted enlarged image distance is larger than object distance 15 A beam of light that is parallel to the principal axis is incident on a concave mirror What 15 happens to the reflected beam of light A It passes through the focal point of the mirror B It passes through the center of curvature of the mirror C It is perpendicular to the principal axis D It also is parallel to the principal axis E It passes between the focal point and the center of curvature of the mirror 16 A beam of light that is parallel to the principal axis is incident on a convex mirror What happens to the reflected beam of light A It appears to be coming from the center of curvature of the mirror B It also is parallel to the principal axis It is perpendicular to the principal axis It appears to be coming from the focal point on the other side of the mirror It appears to be coming from a point between the focal point and the center of curvature of 100 the mirror 17 A beam of light in air is incident on a glass slab at an angle of incidence 0i lt 90 After entering the glass slab the beam of light A bends away from the normal drawn at the point of contact B follows the normal to the glass slab C does not change its path D bends closer to the normal drawn at the point of contact 18 At a quiet pond with crystal clear water you decide to fish with bow and arrow When you aim at the fish you see you must aim A deeper then you perceive the fish to be B directly at the fish C closer to the surface then you perceive the fish to be D It depends on how large the fish is E It depends on how deep the pond is 19 The critical angle for a beam of light passing from water into air is 488 This means that all light rays with an angle of incidence greater than this angle will be A totally transmitted B totally reflected C absorbed D E totally polarized partially reflected and partially transmitted 20 If a lens is submerged in water what happens to its focal length A It decreases B It becomes negative C It stays the same D It increases 21 Select which statement is correct in describing the image formed by a thin lens of a real object placed in front of the lens A If the image is real then it is also enlarged B If the image is real then it is also inverted C If the image is real then it is also upright D If the lens is convex the image will never be virtual 22 A beam of white light goes through dispersion in a prism The color that bends the most is A red B yellow C green D orange E violet 23 The length of time the shutter is open when the film is exposed in a camera is determined by the A focal length of the lens B focusing C f stop D shutter speed E diameter of the aperture 24 The amount of light readiing the film in a camera is determined by the 24 A f stop B diameter of the aperture C shutter speed D focal length of the lens E focusing 25 The focal length of the lens of a simple camera is 40 mm In what direction must the lens be 25 moved to diange the focus of the camera from a person 25 m away to a person 40 m away A sideways from the film B does not make any difference C towards the film D away from the film 26 The lens in a person39s eye is too thick The condition that this person has is called 26 A nearsightedness B spherical aberration C farsightedness D diromatic aberration E astigmatism 27 The back of a person39s eye is too close to the lens This person is suffering from 27 A spherical aberration B nearsightedness C diromatic aberration D farsightedness E astigmatism 28 Nearsightedness can usually be corrected with 28 A cylindrical lenses B converging lenses C achromatic lenses D spherical lenses E diverging lenses 29 Farsightedness can usually be corrected with 29 A diverging lenses B cylindrical lenses C converging lenses D spherical lenses E achromatic lenses 30 A little known fact is that both Robinson Crusoe and Friday wore eyeglasses As it so happens 30 Robinson Crusoe was farsighted while Friday was nearsighted Whose eyeglasses did they use whenever they wanted to start a fire by focusing the Sun39s rays A Friday39s B C Both would work equally well D Both actually worked but Friday39s was a little bit better Robinson Crusoe39s E Neither39s worked they were in possession of matches 31 What type of lens is a magnifying glass A achromatic B diverging C spherical D cylindrical E converging 32 A simple compound microscope provides large magnification by employing A a short focal length objective and a long focal length eyepiece B a long focal length objective and a long focal length eyepiece C a long focal length objective and a short focal length eyepiece D a short focal length objective and a short focal length eyepiece 33 Jack and Mary view the same microorganism through the same compound microscope Mary39s NM is twice as large as Jack39s near point distance N If Mary sees the near point distance MM the magnification with whid Jack sees it is C MM4 D MMZ E 4MM micro organism with magnification A 8M M B 2M M 34 You have a dloice between two lenses of focal lengths La and fb Zia to use as objective lens in building a J J If the U quot39 39 you obtain using lens A is Ma what will be the magnification when using lens B A Mb 4Ma B Mb Ma2 C Mb Mm D Mb BMa E Mb ZMa 35 Wthh one of the following is a correct statement A The image formed by the objective lens of a microscope is larger than the object B The image formed by the objective of a microscope is smaller than the object C The image formed by the objective lens of a telescope is larger than the object D The image formed by the eyepiece is real for both a microscope and a telescope 36 You are given two converging lenses to build a compound microscope Lens A has focal length 050 In and lens B has focal length of 30 In Which of the two lenses would you use for the objective A Lens A because it has the shorter focal length B Lens B because it has the longer focal length C It makes no difference which lens luse for the objective D None because the objective should be a diverging lens 37 Wthh one of the following is not a characteristic of a simple two lens astronomical refracting telescope A The angular size of the final image is larger than that of the object B The final image is inverted C The objective forms a virtual image D The final image is virtual 36 38 A simple refracting telescope provides large magnification by employing 38 A a long focal length objective and a long focal length eyepiece B a long focal length objective and a short focal length eyepiece C a short focal length objective and a short focal length eyepiece D a short focal length objective and a long focal length eyepiece 39 You have a dloice between two lenses of focal lengths fa and fb 2fa to use as objective lens in 39 building a refracting telescope If the magnification you obtain using lens A is Ma what will be the magnification when using lens B A Mb 4Ma B Mb BMa C Mb Ma4 D Mb 2M2 E Mb Ada2 40 Wthh one of the following properties of light is evidence of the wave nature of light 40 A Refraction of light B Reflection of light Emission of light Interference of light Dispersion of light 100 41 Two coherent light sources are diaracterized by 41 A having the same wavelength B having the same frequency C having the same amplitude D having the same velocity E having the same frequency and maintaining a constant phase difference 42 Two beams of coherent light travel different paths arriving at point P If the maximum 42 constructive interference is to occur at point P what should be the phase difference between the two waves The phase difference between the two waves is 271 The phase difference between the two waves is 5712 The phase difference between the two waves is 714 The phase difference between the two waves is 71 The phase difference between the two waves is 712 mUOmDgt 43 Two beams of coherent light travel different paths arriving at point P If the maximum 43 destructive interference is to occur at point P what should be the phase difference between the two waves A The phase difference between the two waves is 71 The phase difference between the two waves is 271 The phase difference between the two waves is 712 The phase difference between the two waves is 714 The two waves are in phase mUOm 44 Wthh one of the following experiments is the justification for the wave theory of light 44 A Frank Hertz experiment B Young39s double slit experiment C Newton39s rings experiment D Huygens experiment E none of the above 45 In the two slit experiment for the condition of bright fringes the value of m 4 corresponds to a path difference of A 4A E 2A B 3A C A D 12A 46 Wthh one of the following mathematical expressions is correct for constructive interference for two beams of light in the double slit experiment A Path Difference Am m 0 1 2 B Path Difference mA m 0 1 2 7 C Path Difference m l m 0 1 2 D Path Difference mA m 0 1 2 E Path Difference m 12 A m 0 1 2 47 Wthh one of the following mathematical expressions is correct for destructive interference for two beams of light in the double slit experiment A Path Difference m 12 A m 0 1 2 B Path Difference mA m 0 1 2 C Path Difference m lz m 0 1 2 D Path Difference Am m 0 1 2 E Path Difference mA m 0 1 2 48 ln Young39s two slit experiment a beam of light from a slit readies at a point on the screen one wavelength behind the wave from the other slit What is observed on the screen at that point A Bright fringe B An empty space C Dark bright fringe D Dark fringe E Bright dark fringe 49 If the distance between the slits in Young39s two slit experiment is decreased whid one of the following statements is true of the interference pattern A The distance between the minima increases B The distance between the maxima stays the same C The distance between the maxima decreases D The distance between the minima stays the same E Impossible to tell without knowing the wavelength of light in use 50 If the distance between the slits and the screen is increased in Young39s two slit experiment which one of the following statements is true of the interference pattern A The distance between the maxima stays the same B The distance between the minima stays the same C The distance between the minima decreases D The distance between the maxima increases E Impossible to tell without knowing the wavelength of light in use 51 If the wavelength of light in Young39s two slit experiment is decreased whidl one of the following statements is true of the interference pattern A The distance between the maxima increases 45 B The distance between the minirna stays the same C The distance between the maxima decreases D The distance between maxima stays the same E Impossible to tell without knowing the separation between the slits 52 A double slit interference experiment is performed in the air Later the same apparatus is 52 immersed in benzene index of refraction n 150 and the experiment is repeated When the apparatus is in benzene you observe the interference fringes to be A equally spaced as when the apparatus is in air B more closely spaced as when the apparatus is in air C more widely spaced as when the apparatus is in air D Impossible to tell without knowing the wavelength of light in use E Impossible to tell without knowing the separation between the slits 53 In a double slit interference experiment you are asked to use laser light of different wavelengths 53 and determine the separation between adjacent maxima You observe that this separation is greatest when you illuminate the double slit with A yellow light B green light C blue light D red light E The separation is the same for all wavelengths 54 When a beam of light which is traveling in glass strikes an air boundary there is 54 A no phase change in the reflected beam B a 60 phase dqange in the reflected beam C a 45 phase dqange in the reflected beam D a 90 phase dqange in the reflected beam E a 180 phase dqange in the reflected beam 55 When a beam of light which is traveling in air is reflected by a glass surface there is 55 A a 90 phase dqange in the reflected beam no phase change in the reflected beam C a 60 phase dqange in the reflected beam 03 D a 45 phase dqange in the reflected beam E a 180 phase dqange in the reflected beam 56 A single slit diffraction pattern is formed on a distant screen Assuming the angles involved are 56 small by what factor will the width of the central bright spot on the screen change if the wavelength is doubled A It will double B It will become eight times as large C It will be cut in half D It will become four times as large E It will be cut to one quarter its original size 57 A single slit diffraction pattern is formed on a distant screen Assuming the angles involved are 57 small by what factor will the width of the central bright spot on the screen change if the distance from the slit to the screen is doubled A It will be cut in half B It will be cut to one quarter its original size C It will double D It will become four times as large E It will become eight times as large 58 Consider two diffraction gratings one has 4000 lines per In and the other one has 6000 lines per 58 on Make a statement comparing the dispersion of the two gratings A The 6000 line grating produces the greater dispersion B The 4000 line grating produces the greater dispersion C Both gratings produce the same dispersion but the orders are sharper for the 6000 line grating D Both gratings produce the same dispersion but the orders are sharper for the 4000 line grating 59 A single slit diffraction pattern is formed on a distant screen Assuming the angles involved are 59 small by what factor will the width of the central bright spot on the screen change if the slit width is doubled A It will become eight times as large B It will double C It will be cut to one quarter its original size D It will be cut in half E It will become four times as large 60 Consider two diffraction gratings with the same slit separation the only difference being that 60 one grating has 3 slits and the other 4 slits If both gratings are illuminated with a beam of the same monochromatic light make a statement concerning the separation between the orders A The grating with 3 slits produces the greater separation between orders B Both gratings produce the same separation between orders C The grating with 4 slits produces the greater separation between orders D Both gratings produce the same separation between orders but the orders are better defined with the 4 slit grating 61 What is the critical angle for light traveling from crown glass n 152 into water n 133 61 A 61 B 48 C 42 D 53 E 57 62 A beam of light in air enters a glass slab with an index of refraction of 140 at an angle of 62 incidence of 300 What is the angle of refraction A 300 B 149 C 209 D 475 E 518 63 A 40 In tall object is placed 60 an away from a converging lens of focal length 30 In What is 63 the nature and location of the image A The image is real 40 In tall 60 In on the other side of the lens B The image is virtual 40 cm tall 60 In on the same side as object C The image is virtual 20 cm tall 15 cm on the other side of the lens D The image is virtual 25 cm tall 30 In on the other side of the lens E The image is real 25 In tall 30 In on the same side as object 64 A 40 qn tall object is placed 500 cm from a diverging lens of focal length 250 In What is the nature and location of the image A A virtual image 20 cm tall 10 In other side of the object B A real image 40 cm tall 20 cm other side of the object C A virtual image 40 cm tall 20 In other side of the object D A virtual image 13 cm tall 167 cm same side as the object E A real image 13 cm tall 167 cm same side as the object 64 65 A ray of light consisting of blue light wavelength 480 nm and red light wavelength 670 nm is incident on a thick piece of glass at 80 What is the angular separation between the refracted red and refracted blue beams while they are in the glass The respective indices of refraction for the blue light and the red light are 14636 and 14561 A 0341quot B 0455quot C 0330quot D 0155quot E 0277quot 66 The length of a telescope is 160 m and it has a magnification of 600 What is the focal length of the eyepiece A 960 cm B 262 cm C 116 cm D 100 cm E 600 cm 67 The distance between the object and the eyepiece of a compound microscope is 25 In The focal length of its objective lens is 020 In and the eyepiece has a focal length of 26 In A person with a near point 25 cm is using the microscope What is the largest angular magnification obtainable using the eyepiece alone as a magnifying lens A 86 B 76 C 65 D 106 E 96 68 A person with normal eyesight uses a converging lens of focal length 10 on He holds the lens close to his eye to finish an engraving job At what distance from the job he must hold the lens A 30 cm B 71 cm C 71 cm D 30 cm E 20 cm 69 What is the magnification of a magnifying glass of focal length 40 In if the image is to be viewed by a relaxed eye with a near point of 25 In A 40 B 30 C 20 D 36 E 63 70 A far sighted person can not see clearly objects that are closer to his eyes than 600 cm Wthh one of the following combinations represents the correct focal length and the refractive power of the contact lenses that will enable him to see the objects at a distance of 250 In from his eyes A 60 In 429 diopters 429 In 233 diopters 429 cm 233 diopters 429 In 233 diopters 429 cm 233 diopters 61000 71 A monod romatic beam of light of wavelength 600 nm is incident normally on a diffraction grating with a slit spacing of 170 x 10 4 A 207 B 105 In What is the angle for the first order maximum C 1640 D 121 E 182 72 In a single slit diffraction experiment a beam of monod rromatic light of wavelength 630 nm is incident on a slit of width 0400 m If the distance between the slit and the screen is 180 m what are the positions of the first darllt fringes A 130x 3 m 73 450 nm of light falls on a single slit of width 030 mm What is the angular width of the central diffraction peak A 0350 B 026 C 0130 D 0170 E 0086quot 65 66 73 74 A film of thickness 106 nm soap bubble film 11 142 results in a constructive interference in the reflected light if this film is illuminated by a beam of light with a wavelength of 601 nm What are the next three thicknesses of this film that will also result in a constructive interference A 670 nm 424 nm 223 nm E 212 nm 318 nm 424 nm C 530 nm 353 nm 265 nm D 212 nm 424 nm 636 nm E 317 nm 529 nm 741 nm 75 A soap bubble has an index of refraction of 133 What minimum thickness of this bubble will ensure maximum reflectance of normally incident 530 nm wavelength light A 398 nm E 769 nm C 249 nm D 199 nm E 996 nm 76 In Young39s two slit experiment the distance between the slits and the screen is 11 m and the distance between the slits is 0040 mm If the second order bright fringe is measured to be 42 In from the centerline what is the distance between the adjacent fringes A 31 cm B 42 cm C 13 cm D 21 cm E 63 cm 77gt 105 The distance between the slits in the two slit experiment is 150 x m A beam of light of wavelength 600 nm is used and the distance between the slit and the screen is 200 m What is the distance on the screen between the central bright fringe and the 4th order bright fringe A 0132 m B 0201 m C 0688 m D 0324 m E 0528 m 78 A very fine thread is placed between two glass plates on one side and the other side is touching to form a wedge A beam of 39 light of g 600 nm quot the wedge and 178 bright fringes are observed What is the thickness of the thread A 323 pm B 223 pm C 763 pm D 533 pm E 267 pm 79 A double slit experiment uses light of wavelength 633 nm with a slit separation of 0100 79 mm and a screen placed 20 m away a What is the linear width of the central fringe b What is the lateral distance between 1st and 2nd order fringes c What is the angular separation between the central maximum and the 1st order maximum 80 A soap bubble has an index of refraction of 133 What minimum thickness of this bubble 80 will ensure maximum reflectance of normally incident 530 nm wavelength light 81 A single slit experiment uses light of wavelength 720 nm with a slit separation of 0250 81 mm and a screen placed 27 m away a What is the angular width of the central fringe b What is the linear width of the central fringe on the screen c What is the linear distance on the screen between the central maximum and the 1st order maximum 82 When red light illuminates a grating with 7000 lines per centimeter its second 82 maximum is at 624 What is the wavelength of the light 75 78 nrn wavelength llght a Haw rnany sde rnanrna wuuld be ubserved an ane slde at b the eentral rnaxrrnurn7 What ls the lrneardrstanae between the lst and 2nd rnaxrrnav m Damd Stands 25 rneters m trant at a plane rnrrrar m Hawtartrarn DamdlsDavld slmage m the rnrrrarv b IfDavld maves away rrarn the rnrrraratl 5 ms hawtast are Davld and hrs lmage muvmg apartme eaeh ather7 IfDavld rs IBEI ern tall haw tall rs hrs lmage m the rnrrrarv 85 a lsthe lmage real arvrrnralv b Haw tarrs the lmage rrarn the mrrur7 c lsthe lmage upnght ar mvened7 a Haw 11151115 the rrnage7 as a Where rs the lmage farmed7 b Haw tall rs m 87 respeet ta the surface then emerges mm the water The mdex furglass ls 1 5n and fur water 1 33 a What rs the angle at retraeaan m the glass b What rs the angle at retraeaanr the waterv c lsthere any lncldemangle m arr furwhlch the ray wlll natenter the water are ta mtal rnternal re ectlnm ax A 3 n ern tall statue rs AB ern m trant at a bicnnvzx lers taeal length in cm aa a lsthe lmage real arvrrnralv b Haw tarrs the rrn e ens7 c lsthe lmage upnght ar mvened7 a Haw hlghlslhel noun 262 B 1 9 c w k a e a as lens 90 An object is located 38 m in front of a plane mirror The image formed by the mirror appears to 90 be A 19 m in front of the mirror B 38 m behind the mirrors surface C 19 m behind the mirrors surface D 38 m in front of the mirror E on the mirror39s surface 91 A person uses corrective glasses of power 85 D 91 a Is this person nearsighted or farsighted b If the glasses are worn 20 cm from the eye what is the person39s far point without glasses 92 A nearsighted person has a near point of 12 cm and a far point of 17 In If the lens is 92 20 In from the eye a what lens power will enable this person to see distant objects clearly b what then will be the new near point 93 Consider a magnifying glass with a power of 30 D 93 a What is the maximum magnification for a person with a near point of 25 cm b What is the magnification when viewing with a relaxed eye 94 A terrestrial telescope has focal lengths of 15 mm 75 cm and 120 cm for eyepiece 94 erecting lens and objective respectively a What is the magnification of the telescope b Is this an angular magnification or a lateral size magnification c What is its length objective to eyepiece distance 95 The world39s largest refracting telescope is operated at the Yerkes Observatory in 95 Wisconsin It has an objective of diameter of 102 m Suppose such an instrument could be mounted on a spy satellite at an elevation of 300 km above the surface of the Earth What is the minimum separation of two objects on the ground if their images are to be clearly resolved by this lens Assume an average wavelength of 055 pm for white light 96 An objective lens of a telescope has a 190 m focal length When viewed through this 96 telescope the moon appears 525 times larger than normal How far apart are the objective lens and the eyepiece when this instrument is focused on the moon 97 A student wishes to build a telescope She has available an eyepiece of focal length 50 97 In What focal length objective is needed to obtain a magnification of 10x 98 Consider a magnifying glass with a power of 80 D 98 a What is the maximum magnification for a person with a near point of 25 cm b What is the magnification when viewing with a relaxed eye 99 A magnifying glass of focal length 150 mm is used to examine an old manuscript 99 a What is the mainnum magnification given by the lens b What is the magnification for relaxed eye viewing image at infinity 100 A person is nearsighted with a near point of 75 In 100 a What FOCAL LENGTH is this b What POWER lens is needed to correct their nearsightedness assuming distance from lens to eye is negligible m m m m m e 1m 3 m m H LU e H 1 1m 1m 1 S 1 Em x mg m mhu m 3 6 5 0 t6emoo d 333 762 1008d6h8b 95 46 116 511 31531m510mc34 3H m m H W M1 om V m n V u 11 mm m 3 BDAEACADDACADEBDCEEADDEEDDD m D D D D m5M5S wwmamw6wwmnWRM7mm mm am M 8 w a 21cm noun 2L3 a 91 a nearsight d H cm 93 a 75 7D b 3 mm fmmnfthelens 175 b 4 33Dmpt2rs

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