Questions

A ray of light is incident at an angle of $60^{o}$ on one face of a prism of angle $30^{o}$ . The ray emerging out of the prism makes an angle of $30^{o}$ with the incident ray. The emergent ray is

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Normal to the face through which it emerges

Inclined at 30o to the face through which it emerges

Inclined at 60o to the face through which it emerges

None of the above

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detailed solution

Correct option is A

i=60oA=30oD=30oD=i1+i2−A30=60+i2−30i2=0 it comes out normally.

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