Question

21. As shown in figure, ABC is right angled isosceles
prism kept in air. A ray of light is incident on it
normally as shown. The refractive index for the
material of prism is given by u = 1 + 0.4t here t
is in second. The angular velocity of the emergent
ray at t = 1 is
4
B
(1) 1.2 rad/s
(3) 2 rad/s
(2) 1 rad/s
(4) 1.5 rad/s

Answer 1

Answer:

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