For equal angle of incidence, the angle of refraction for three medium – InterviewSolution

InterviewSolution

1.	For equal angle of incidence, the angle of refraction for three medium A B and C are 15°, 25° and 35°. In which medium the velocity of light will be minimum?
Answer» Refractive index of medium µ = \(\frac{\sin i}{\sin r}\) Here, sin i = constant ∴ µ ∝ \(\frac{1}{\sin r}\) ∴ r_A = 15°, r_B = 25°, r_C = 35° ∴ sinr_A < sinr_B < sinr_C ∴ µ_A > µ_B > µ_C So, velocity of light is minimum in medium A

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