Question

The refractive indices of four media A, B, C and D are given in the following table:

MEDIUM A B C D

REFRACTIVE

INDEX

1.33 1.50 1.52 2.40If light, travels from one medium to another, in which case the change in speed will be

(i) minimum

(ii) maximum ?​

Answer 1

Answer:

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Explanation:

Analyse the following table showing refractive indices of four media A, B, C and D and answer the questions that follow: The refractive indices of four media A, B, C and D are given in the following table: Medium B C D Refractive Index 1.33 1.50 1.52 2.40 a) If light, travels from one medium to another, in which case the change in speed will be minimum. b) If light, travels from one medium to another, in which case the change in speed will be maximum. c) A light ray enters from medium A to medium B as shown in the figure. The refractive index of medium B relative to A will: Medium B Medium A ii) Less than unity iv) Zero i) Greater than unity iT) Equal to unity d) The laws of reflection hold good for: i) plane mirror only iii) convex mirror only ii) concave mirror only iv) all mirror irrespective of their shape