Velocity of light in air is 3 x 108 m/s. While its velocity in a medium is 1.5 x 108 m/s. Then, refractive index of this medium is
A. 3
B. 5
C. 0.5
D. 2
Answer:D
Velocity of light in air is 3 x 108 m/s. While its velocity in a medium is 1.5 x 108 m/s. Then, refractive index of this medium is
A. 3 B. 5 C. 0.5 D. 2