A ray of light is incident at an angle of `60^@` on the face of a prism having refracting angle `30^@.` The ray emerging out of the prism makes an angle `30^@` with the incident ray. Show that the emergent ray is perpendicular to the face through which it emerges.

A ray of light is incident at an angle of `60^@` on the face of a pris

1.	A ray of light is incident at an angle of `60^@` on the face of a prism having refracting angle `30^@.` The ray emerging out of the prism makes an angle `30^@` with the incident ray. Show that the emergent ray is perpendicular to the face through which it emerges.
Answer» Correct Answer - A::C::D Given `i_1=60^@,A=30^@` and `delta=30^@`. From the relation, `delta=(i_1+i+2)-A` we have, `i_2=0` This means that the emergne ray is perpendicular to the face through which it emerges.

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A ray of light is incident at an angle of `60^@` on the face of a prism having refracting angle `30^@.` The ray emerging out of the prism makes an angle `30^@` with the incident ray. Show that the emergent ray is perpendicular to the face through which it emerges.

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