A fish is a little away below the surface of a lake. If the critical angle is 49°, then…
Physics · JEE Main · NTA Exams — Optics
A fish is a little away below the surface of a lake. If the critical angle is 49°, then the fish could see things above the water surface within an angular ring of θ° where
- θ = 49°
- θ = 90°
- θ = 98°
- θ = \(2 \frac{1}{2} \circ\)
Answer
(C) θ = 98°
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