Question

A ray of blue light is let to fall on a glass
e light is let to fall on a glass plate which after refraction travels in the glass plate
with a velocity 2.14 x 10 ^8 m/s. The refractive index of glass nearly is
(d) 1.5
16
(c) 1.4.​

Answer 1

The refractive index of glass is 1.4

Explanation:

Velocity of light = 2.14 x 10 ^8 m/s

μ = c/v

μ  =3×10^8 x 2.14/10^8

= 3 / 2.14

= 1.4

Thus the refractive index of glass is 1.4

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