1. For total internal reflection in a glass slab .kept in airA. the li

1.	1. For total internal reflection in a glass slab .kept in airA. the light ray is incident at 90° to the surface of the glass medium. B. the critical angle is 90° and is measured in air. C. the critical angle is measured in glass for which the angle of refraction in air is 90° D. the light ray is incident at 09 to the surface of the glass medium.
Answer» EXPLANATION: a is RIGHT WP do DJ CNN Choo

1. For total internal reflection in a glass slab .kept in airA. the light ray is incident at 90° to the surface of the glass medium. B. the critical angle is 90° and is measured in air. C. the critical angle is measured in glass for which the angle of refraction in air is 90° D. the light ray is incident at 09 to the surface of the glass medium.

Answer»

EXPLANATION:

a is RIGHT WP do DJ CNN Choo

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