The refractive index of glass is 1.5 and that of water is 1.3 .If the speed of light in water is 2.25×100000000 m/s what is the speed of light in glass ?

627 Views Updated: 18 Apr 2018
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Answer

Solution 

refractive index of a medium = (speed of light in air)/( speed of light in that medium)

refractive index of a medium= c/v

⇒ c = v× refractive index of that medium

A/q,

2.25×10^8 ×1.3 = V× 1.5

⇒ V = 1.95 ×10^8 m/s

speed in glass is 1.95 ×10^8 m/s

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