A ray of light travelling in a medium of refractive index is incident at an angle on…

PHYSICS · Single correct · A Level · Physics · Waves · Waves

Problem

A ray of light travelling in a medium of refractive index μ\mu is incident at an angle ii on a composite transparent plate consisting of three plates of refractive indices μ1\mu_1, μ2\mu_2, and μ3\mu_3. The ray emerges from the composite plate into a medium of refractive index μ4\mu_4 at angle xx. Then, (1) sin⁡x=sin⁡i\sin x = \sin i (2) sin⁡x=μμ4sin⁡i\sin x = \frac{\mu}{\mu_4}\sin i (3) sin⁡x=μ4μsin⁡i\sin x = \frac{\mu_4}{\mu}\sin i (4) sin⁡x=μ1μ3μμ22μ4sin⁡i\sin x = \frac{\mu_1\mu_3\mu}{\mu_2^2\mu_4}\sin i

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