Question

The refractive index of a given transparent medium is 1.5. What will be the speed of light in that medium?

• A. 2 × 10^8 m/sec
• B. 4.5 x 10^8 m/sec
• C. 3 x 10^8m/sec
• D. 0.5 x 10^8m/sec

Answer 1

Answer:

A. 2 × 10^8 m/sec

• Using the refractive index formula, V=c/n;

• The speed of light in the medium is calculated as 2 ×10^8 m/sec.