Question

162. In total internal reflection when the angle of
incidence is equal to the critical angle for the pair
of media in contact, what will be angle of
refraction?
(1) 180°
A 0°
(3) equal to angle of incidence
(4)/90°​

Answer 1

Answer:

h

Explanation:

Refer to the attachment for the diagram.

When the angle of incidence , is equal to the critical angle , then the refracted ray grazes with the surface and forms an angle of 90° with the normal.

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