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A light ray is incident on a plane mirror, which after getting reflected strikes another plane mirror as shown.The angle between the two mirrors is 60.Find the angle theta?
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?A light ray is incident on a plane mirror, which after getting reflec...

Figure shows two plane mirrors kept at angle 60�.  A light ray incidents at A making an angle of incidence α,
reflected and again incidents at B making an angle β and getting reflected .
Reflected ray from B makes angle θ with the initial incident ray.
 
At reflection point A, as shown in figure, we have α+x = 90degree ....(1)
At reflection point B, as shown in figure, we have β+y = 90degree ....(2)
 
By adding (1) and (2), after substituting x+y = 120degree, we get,  α+β = 60degree....(3)
 
From ΔABC, we have,  2α + 2β + θ = 180degree ....(4)
 
Hence By using eqn.(3), we get , θ = 180 - 120 = 60degree
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?A light ray is incident on a plane mirror, which after getting reflected strikes another plane mirror as shown.The angle between the two mirrors is 60.Find the angle theta?
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?A light ray is incident on a plane mirror, which after getting reflected strikes another plane mirror as shown.The angle between the two mirrors is 60.Find the angle theta? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about ?A light ray is incident on a plane mirror, which after getting reflected strikes another plane mirror as shown.The angle between the two mirrors is 60.Find the angle theta? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for ?A light ray is incident on a plane mirror, which after getting reflected strikes another plane mirror as shown.The angle between the two mirrors is 60.Find the angle theta?.
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