Question

When a ray of light enters a medium of refractive
index u, it is observed that the angle of refraction
is half of the angle of incidence is than angle of
incidence is
(1) 2 cos (u/2)
(2) cosł(u/2)
(3) 2 cos'(u)
(4) 2 sin-(u/2)​

Answer 1

Answer:

YOUR ANSWER IS B

Explanation:

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