Velocity of light in glass whose refractive index with respect to air is 1.5 is 2 × 10 8 m s − 1 and in certain liquid the velocity of light found to be 2.50 × 10 8 m s − 1 .The refractive index of the liquid with respect to air is Options: A . &nbsp0.64 B . &nbsp0.80 C . &nbsp1.20 D . &nbsp1.44

Answer: Option C : C Refractice index of glass slab = 1.5 Velocity of light in glass = 2 × 10 8 m s − 1 Velocity of light in liquid = 2.50 × 10 8 m s − 1 μ α 1 v ⇒ μ l i μ g = v g v l ⇒ μ l 1.5 = 2 × 10 8 2.5 × 10 8 ⇒ μ l = 1.2

Velocity of light in glass whose refractive index with respect to air is 1.5 is

Question

Velocity of light in glass whose refractive index with respect to air is 1.5 is

2 \times 10^{8} m s^{- 1}

and in certain liquid the velocity of light found to be

2.50 \times 10^{8} m s^{- 1}

.The refractive index of the liquid
with respect to air is

Options:

A . 0.64

B . 0.80

C . 1.20

D . 1.44

Answer: Option C
:
C
Refractice index of glass slab

= 1.5

Velocity of light in glass

= 2 \times 10^{8} m s^{- 1}

Velocity of light in liquid

= 2.50 \times 10^{8} m s^{- 1}

μ α \frac{1}{v} \Rightarrow \frac{μ_{l i}}{μ_{g}} = \frac{v_{g}}{v_{l}} \Rightarrow \frac{μ_{l}}{1.5} = \frac{2 \times 10^{8}}{2.5 \times 10^{8}}

\Rightarrow μ_{l} = 1.2

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