A ray of light is incident at an angle of 60o on one face of a prism of angle 30o . The ray emerging out of the prism makes an angle of 30o with the incident ray. The emergent ray is
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a
Normal to the face through which it emerges
b
Inclined at 30o to the face through which it emerges
c
Inclined at 60o to the face through which it emerges
d
None of the above
answer is A.
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Detailed Solution
i=60oA=30oD=30oD=i1+i2−A30=60+i2−30i2=0 it comes out normally.
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A ray of light is incident at an angle of 60o on one face of a prism of angle 30o . The ray emerging out of the prism makes an angle of 30o with the incident ray. The emergent ray is