Question

5.
A light ray enters from medium A to medium B as shown in the figure. The refractive index of medium
B with respect to A will be
Medium B
Medium A
(2) Less than unity
(1) Greater than unity
(3) Equal to unity
(4) Zero

{do you guys need the image?}​

Answer 1

Answer:

the answer is option 3 equal to unity

Answer 2

The refractive index of medium A relative to B will be less than unity.
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