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Light shows staged with lasers use moving mirrors to swing
Chapter 25, Problem 3(choose chapter or problem)
QUESTION:
Problem 3PE
Light shows staged with lasers use moving mirrors to swing beams and create colorful effects. Show that a light ray reflected from a mirror changes direction by 2θ when the mirror is rotated by an angle θ .
Questions & Answers
QUESTION:
Problem 3PE
Light shows staged with lasers use moving mirrors to swing beams and create colorful effects. Show that a light ray reflected from a mirror changes direction by 2θ when the mirror is rotated by an angle θ .
ANSWER:
Solution 3PE
In above figure the mirror LM rotated by angle.
Since angle of incidence equals to angle of reflection,
So,
⎳IOP = ⎳POR
= 1
By propert