The refractive index of liquid is 1.5. If the velocity of light in vacuum is 3.0 x 108ms-1, the velocity of light in the liquid is
A
1.5 x 108m-1
B
2.0 x 108m-1
C
3.0 x 108m-1
D
4.5 x 108m-1
E
9.0 x 108m-1
Verified Correct Answer: B.
Physical Principles & Numerical Solution
n = \(\frac{\text{velocity of light in vacuum}}{\text{velocity of light in liquid}}\)
1.5 = \(\frac{3\times10^4}{\text{velocity of light in liquid}}\)
Velocity of light in liquid = 2 x \(10^8ms^{-1}\)
Source: Myschool Past Questions Archive (Record #28819)