Find the value of the angle Θ.

Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter37: Reflection And Images Formed By Reflection
Section: Chapter Questions
Problem 34PQ
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The distance of a lamp from a large plane mirror
is twice the distance of a person from the plane mirror. The
Light from the lamp reaches this person by two paths. I know
moves the mirror to an angle of incidence Θ, and is reflected from the mirror to the person. It also moves directly to her without
reflect in the mirror. The total distance traveled by light
in the first case it is twice the distance traveled by the
light in the second. Find the value of the angle Θ.

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