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Two plane mirror M(1) and M(2) area incl...

Two plane mirror `M_(1)` and `M_(2)` area inclined at angle `theta` as`
` shown. A ray of light 1, which is parallel to `M_(1)`strikes `M_(2)` and after two
reflection , the ray 2 become parrallel to `M_(2)`.Find the angle `theta`

A

`0^(@)`

B

`30^(@)`

C

`45^(@)`

D

`60^(@)`

Text Solution

Verified by Experts

The correct Answer is:
D
Different angles are shown in figure.

In triangle Abc, `theta+theta+theta=180^(@), theta=60^(@)`
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Two plane mirrors M_(1) and M_(2) are inclined at angle as shown in Figure . A ray of light1, which is parallel to M_(1) , strike M_(2) and after two reflections, ray 2 becomes parallel to M_(2) . Find the angle theta .

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Knowledge Check

  • Two plane mirror M_(1) "and" M_(2) are inclined to each other at 70^(@) . A ray incident on the mirror M_(1) at an angle theta fallls on M_(2) and is then reflected parallel to M_(1) for

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  • Two plane mirrors are inclined at an angle theta to one another. A ray of light incident on the first mirror and parallel to the second mirror is reflected from the second mirror parallel to the first mirror. What is the value of theta ?

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