In a certain liquid- the velocity of light is found to be 2-50 - 108 ms -1- Find the absolute refractive index of that liquid-A- 1-3B- 1-2C- 1-5D- 1

The correct option is B 1.2Given: Speed of light in liquid, v_l = 2.5 × 10^8 m/s Let n_l be refractive index of liquid wrt vacuum. Speed of light in vacuum i ...

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Standard X

Physics

Refractive Index

In a certain ...

Question

In a certain liquid, the velocity of light is found to be $2.50 \times 10^{8} m s^{- 1}$ . Find the absolute refractive index of that liquid.

1.3

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1.2

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Solution

The correct option is C $1.2$
Given:
Speed of light in liquid, $v_{l} = 2.5 \times 10^{8} m / s$

Let $n_{l}$ be refractive index of liquid wrt vacuum.
Speed of light in vacuum is $c = 3 \times 10^{8} m / s$

From definition of refractive index,
$n_{l} = \frac{c}{v_{l}}$
$n_{l} = \frac{3 \times 10^{8}}{2.5 \times 10^{8}}$
$n_{l} = 1.2$

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In a certain liquid, the velocity of light is found to be 2.50×108 ms−1. Find the absolute refractive index of that liquid.

The correct option is C 1.2Given: Speed of light in liquid, vl=2.5×108 m/s Let nl be refractive index of liquid wrt vacuum. Speed of light in vacuum is c=3×108 m/s From definition of refractive index, nl=cvl nl=3×1082.5×108 nl=1.2

In a certain liquid, the velocity of light is found to be $2.50 \times 10^{8} m s^{- 1}$ . Find the absolute refractive index of that liquid.