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Two plane mirrors M1 and M2 each have length 1 m and are separated by 1 cm. A ray of light is

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Two plane mirrors M1 and M2 each have length 1 m and are separated by 1 cm. A ray of light is incident on one end of mirror M1 at an angle is 0 45 . How many reflections will the ray have before going out from the other end? 

(a) 100 

(b) 101 

(c) 99 

(d) none of these 

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1 Answer

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Best answer

Correct option (b) 101

Explanation:

After every cm if is refleching. 

∴ Reflection at 0, 1, 2, 3.........., 100 cm 

∴101 reflections

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