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A horizontal ray of light passes through...

A horizontal ray of light passes through a prism whose apex angle is `4^@` and then strikes a vertical mirror M as shown in Figure. For the ray to become horizontal after reflection, Find the angle by which the mirror must be rotated.

A

`2^(@)`

B

`3^(@)`

C

`4^(@)`

D

`1^(@)`

Text Solution

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The correct Answer is:
A, D
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DC PANDEY ENGLISH-RAY OPTICS-B. More than one option is correct
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