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Question: A fish is a little away below the surface of a lake. If the critical angle is 49<sup>0</sup>, then t...

A fish is a little away below the surface of a lake. If the critical angle is 490, then the fish could see things above the water surface within an angular range of qŗ where –

A

q = 490

B

q = 900

C

q = 980

D

q = 24

Answer

q = 980

Explanation

Solution

q = 2C = 2 × 49 = 980