1.

(Given: C = 3 × 108 m/s)i The speed of light in a transparent medium is 2 × 108 m/s. Find the absolute refractive index of the medium.ii. The absolute refractive index of a transparent medium is 5/3. Find the speed of light in the medium.iii. The absolute refractive index of a transparent medium is 2.4 and the speed of light in that medium is 1.25 × 108 m/s. Find the speed of light in air.iv. The speed of light in water is 2.25 × 108 m/s and that in glass is 2 × 108 /s. Find the refractive index of (i) the glass with respect to water (ii) water with respect to the glass.v. If the refractive index of a certain glass with respect to water is 1.25, find the refractive index of water with respect to the glass.vi. If the absolute refractive index of glass is 1.5 and that of water is \(\frac{4}{3}\), find the refractive index of water with respect to glass.

Answer»

i. 1.5

ii. 1.8 × 108 m/s

iii. 3 × 108 m/s

iv. (i) 1.125

(ii) 0.889 (approximately)

v. 0.8

vi. \(\frac{8}{9}\)



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