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An argon ion laser puts out 5.0 W of continuous power at a
Chapter 7, Problem 75E(choose chapter or problem)
Problem 75E
An argon ion laser puts out 5.0 W of continuous power at a wavelength of 532 nm. The diameter of the laser beam is 5.5 mm. If the laser is pointed toward a pinhole with a diameter of 1.2 mm, how many photons will travel through the pinhole per second? Assume that the light intensity is equally distributed throughout the entire cross-sectional area of the beam. (1 W = 1 J/s)
Questions & Answers
QUESTION:
Problem 75E
An argon ion laser puts out 5.0 W of continuous power at a wavelength of 532 nm. The diameter of the laser beam is 5.5 mm. If the laser is pointed toward a pinhole with a diameter of 1.2 mm, how many photons will travel through the pinhole per second? Assume that the light intensity is equally distributed throughout the entire cross-sectional area of the beam. (1 W = 1 J/s)
ANSWER:
Solution Step 1 (a)The 6 elements that make up the group 18 of the periodic table were initially called inert gases since they were highly unreactive.But later on if was found that they were capable of reacting with other elements and thus the name ‘inert elements’ was dropped.