1.

A light ray enters from medium A to medium B as shown in Figure 10.2. The refractive index of medium B relative to A will be(a) greater than unity(b) less than unity(c) equal to unity(d) zero

Answer»

(a) greater than unity

Since light rays in medium B goes towards normal. So it has greater restrictive index and lesser velocity of light with respect to medium A. So refractive index of medium B with respect to medium A is greater than unity.



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