Question

8) Light travels with a velocity 1.5 x 10 m/s in a medium. On entering
second medium its velocity becomes 0.75 x 10 m/s. What is the
refractive index of the second medium with respect to the lirst medium?​

Answer 1

Explanation:

n12 = v2/V1

refractive index = 0.75 ×10/1.5 × 10

hence n12 = 0.5