Question

Velocity of light in glass whose refractive index with respect to air is 1.5 is 2 × $10 ^ { 8 } \mathrm {~m} / \mathrm { s }$ and in certain liquid the velocity of light found to be $2.50 \times 10 ^ { 8 } \mathrm {~m} / \mathrm { s }$. The refractive index of the liquid with respect to air is

• A. 0.64
• B. 0.80
• C. 1.20
• D. 1.44

Answer 1

Answer: (C)

1.20

Answer 2

$\mu _ { l } = 1.2$