Advertisements
Advertisements
प्रश्न
The speed of light in water is 2.25 × 108 m/s. If the speed of light in vacuum be 3 × 108 m/s, calculate the refractive index of water.
उत्तर
Given:
Speed of light in water = 2.25 × 108 m/s
Speed of light in vacuum = 3 × 108 m/s
Refractive index of water = ?
Applying the formula for refractive index, we get:
Refractive index of a medium = (Speed of light in vacuum) / (Speed of light in the medium)
For water:
Refractive index of water = (Speed of light in vacuum) / (Speed of light in water)
= (3 × 108) / (2.25 × 108)
= 1.33
Thus, the refractive index of water is 1.33.
APPEARS IN
संबंधित प्रश्न
The refractive index of diamond is 2.42. What is the meaning of this statement in relation to the speed of light?
If the refractive index for light going from air to diamond be 2.42, what will be the refractive index from light going from diamond to air?
Light travels through air at 300 million ms−1. On entering water it slows down to 225 million ms−1. Calculate the refractive index of water.
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
The refractive index of water is:
(a) 1.33
(b) 1.50
(c) 2.42
(d) 1.36
Refractive indices of four media A, B, C and D are given below:
| Medium | Refractive index |
| A | 1.33 |
| B | 1.44 |
| C | 1.52 |
| D | 1.65 |
In which of these four media is the speed of light (i) maximum, and (ii) minimum?
If in a medium, the speed of light is 1.5 × 108 m/s how much will the absolute refractive index of that medium be?
Solve the example.
If the absolute refractive indices of glass and water are 3/2 and 4/3 respectively, what is the refractive index of glass with respect to water?
The refractive index of flint glass is 1.65 and that for alcohol is 1.36 with respect to air. What is the refractive index of the flint glass with respect to alcohol?
Absolute refractive indices of glass and water are `3/2 and 4/3` respectively. If the speed of light in glass is 2 × 108 m/s, the speed of light in water is ______.
