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  • 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

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

 

Answers (1)

Hence, the correct answer is option (a).

Explanation:- 

If the ray bends toward the normal when entering medium B, nB>nA, and the refractive index of B relative to A is greater than 1.

  • If the ray bends away from the normal, nB<nA ?, and the refractive index of B relative to A is less than 1.
  • If there is no bending (straight path), nB=nA, and the relative refractive index is equal to 1.
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