Advertisements
Advertisements
प्रश्न
The refractive indices of glass and water with respect to air are 3/2 and 4/3 respectively. If speed of light in glass is 2 x 108 m/s, find the speed of light in water.
उत्तर
Given: ng = 3/2 and nw = 4/3
Speed of light in water =
Speed of light in water = 2.25 x 108 m/s
APPEARS IN
संबंधित प्रश्न
The absolute refractive indices of two media 'A' and 'B' are 2.0 and 1.5 respectively. If the speed of light in medium 'B' is 2 × 108 m/s, calculate the speed of light in:
(i) vacuum,
(ii) medium 'A'.
Refractive indices of carbon disulphide and ethyl alcohol are 1.63 and 1.36 respectively. Which is optically denser?
The refractive index of diamond is 2.42. What is the meaning of this statement in relation to the speed of light?
Define Snell's law of refraction. A ray of light is incident on a glass slab at an angle of incidence of 60°. If the angle of refraction be 32.7°, calculate the refractive index of glass. (Given : sin 60° = 0.866, and sin 32.7° = 0.540).
What is the speed of light in a medium of refractive index
What is meant by the refractive index of a substance?
The speed of light in substance X is 1.25 × 108 m/s and that in air is 3 × 108 m/s. The refractive index of this substance will be:
(a) 2.4
(b) 0.4
(c) 4.2
(d) 3.75
Prove the statement.
If the angle of incidence and angle of emergence of a light ray falling on a glass slab are i and e respectively, prove that, i = e.
n = _______. This law is also called as Snell’s law.
A light ray enters from medium A to medium B as shown in figure. The refractive index of medium B relative to A will be ______.
