Question

The refractive index of kerosene is 1.44. Find the speed of light in kerosene.​

Answer 1

Answer:

2.04×10^8

Explanation:

speed of light /refractive index of the kerosene

3×10^8/1.44

=2.04×10^4

aprox

Answer 2

Explanation:

Answer

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Given: Light enters from air to kerosene having refractive index of 1.47. The speed of light in air is 3×10

8

m/s

To find the speed of the light in kerosene

Solution:

We know,

Refractive index of the medium=

Speed of light in the medium

Speed of light in air

Hence,

Refractive index of the kerosene=

Speed of light in the kerosene

Speed of light in air

⟹1.47=

Speed of light in the kerosene

3×10

8

⟹Speed of light in the kerosene= 1.473×10 8

⟹Speed of light in the kerosene=2.04×10

8

m/s

is the required speed of light in kerosene.