Advertisements
Advertisements
प्रश्न
The refractive index of diamond is 2.42. What is the meaning of this statement?
उत्तर
The refractive index of diamond is 2.42. This means that the speed of light in diamond will reduce by a factor of 2.42 as compared to its speed in air. In other words, the speed of light in a diamond is `1/2.42` times the speed of light in a vacuum.
संबंधित 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.
What is the unit of refractive index?
Which has higher refraction index : water of glass?
Fill in the following blank with a suitable word:
When a ray of light goes from air into a clear material, you see the ray bend. How much the ray bends is determined by the ............... of the material.
What is the speed of light in a medium of refractive index `6/5` if its speed in air is 3,00,000 km/s?
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.
What is meant by the refractive index of a substance?
The refractive index of water with respect to air is `4/3`. The refractive index of air with respect to water will be:
(a) 1.75
(b) 0.50
(c) 0.75
(d) 0.25
Mark the correct answer in the question.
If the refractive index of glass with respect to air is 3/2, what is the refractive index of air with respect to glass?
_______ is the unit of refractive index.
n = _______. This law is also called as Snell’s law.
If the refractive index of air with respect to glass is 2/3. What is the refractive index of glass with respect to air?
2n1 : Refractive index of medium 2 with respect to medium 1 : : 1n2 : _______
Solve the following example.
Speed in first medium, v1 = 3 × 108 m/s
Speed in second medium, v2 = 2 × 108 m/s
Then 2n1 = ?
Define the refractive index of a medium.
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?
Noor, a young student, was trying to demonstrate some properties of light in her Science project work. She kept ‘X’ inside the box (as shown in the figure) and with the help of a laser pointer made light rays pass through the holes on one side of the box. She had a small butter-paper screen to see the spots of light being cast as they emerged.
She measured the angles of incidence for both the rays on the left side of the box to be 48.60. She knew the refractive index of the material ‘X’ inside the box was 1.5. What will be the approximate value of angle of refraction?
(use the value: sin 48.6° ≈ 0.75)
How is the refractive index of material related to the velocity of light?
What happens when a light ray passes from a rarer medium to a denser medium?
Absolute refractive indices of diamond and water are 2.42 and 1.33 respectively. Find the value of refractive index of water w.r.t. diamond.
