A marine researcher compares how two different clear panels, A and B

PHYSICS · Single correct · CBSE · Physics · Light — Reflection and Refraction · Light — Reflection and Refraction

Problem

A marine researcher compares how two different clear panels, A and B, bend light underwater. Panel A has an index of refraction of 1.47, and panel B has an index of 1.62. A light ray in water (1.33) strikes each panel at 35° to the normal. The researcher defines the percentage reduction in angle as θA−θBθA×100%\frac{\theta_A-\theta_B}{\theta_A}\times100\%, where θA\theta_A and θB\theta_B are the refracted angles in panels A and B, respectively. Which value is closest to this percentage reduction? (a) 13%13\% (b) 10%10\% (c) 4%4\% (d) 9%9\%

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