4. Figure 10.1 shows a ray of light as it travels from medium A to medium B. Refractive index of the medium B relative to medium A is (a) √√3/√2 (b) √√2/√3 (c) 1/√2 (d) √2 60 Fig. 10.1 Medium B
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Answer:
Answer: √3/√2
Explanation:
Refractive Index of B with respect to A
The ratio of the sine of the angle of incidence to the sine of the angle of refraction is a constant, for the light of a given colour and for the given pair of media. This law is also known as Snell’s law of refraction of light. The law follows from the boundary condition that a wave is continuous across a boundary, which requires that the phase of the wave be constant on any given plane.
n = sin i/sin r
n = sin 60/sin 45
n = (√3 /2) /(1/√2)
n = √3/√2
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