Advertisements
Advertisements
प्रश्न
A light ray passes from water to
- air, and
- glass.
In each case, state how does the speed of light change.
Advertisements
उत्तर
- When a light beam travels from water to air. There will be an increase in light speed.
- A light beam travels slower through glass than it does through water.
APPEARS IN
संबंधित प्रश्न
Write true or false of the following statement.
The speed of light in vacuum is 3 × 108 ms-1.
State the speed of light in (a) air, (b) glass.
State whether light slows down or speeds up in the following cases :
Light going from glass to water.
When light travels from a denser to a rarer medium, its speed ______.
The speed of light in air is 3 × 108 m s-1. Calculate the speed of light in glass. The refractive index of glass is 1.5.
An obliquely incident light ray bends at the surface due to a change in speed when passing from one medium to another. The ray does not bend when it is incident normally. Will the ray have a different speed in the other medium?
The speed of light is maximum in ______.
Define transparent materials.
The speed of light decreases in a denser medium, light bends towards the normal.
Higher-Order Thinking Skills:
M = 2.42 for diamond. What is the meaning of this statement in relation to the speed of light?
