Question

The refractive index of a medium is 2. The speed of light in that medium is

• A. $6 × 10^8 m/s$
• B. $10^8 m/s$
• C. $5 × 10^8 m/s$
• D. $1·5 × 10^8 m/s$

Answer 1

Answer: (D)

$1·5 × 10^8 m/s$

Answer 2

The correct option is (D): $1·5 × 10^8 m/s$