Advertisements
Advertisements
प्रश्न
When light travels from a denser to a rarer medium, its speed ______.
Advertisements
उत्तर
When light travels from a denser to a rarer medium, its speed increases.
APPEARS IN
संबंधित प्रश्न
Write true or false of the following statement.
The speed of light in vacuum is 3 × 108 ms-1.
State whether light slows down or speeds up in the following cases :
Light going from air to glass.
State whether light slows down or speeds up in the following cases :
Light going from water to air.
A light ray passes from water to
- air, and
- glass.
In each case, state how does the speed of light change.
The speed of light is maximum in ______.
What is the speed of light in vacuum?
Numerical problem.
Light enters from air into a glass plate having refractive index 1.5. What is the speed of light in glass? (Ans: 2 × 108 ms–1)
Higher Order Thinking Skills.
Light ray emerges from water into air. Draw a ray diagram indicating the change in its path in water.
Objects that allow light to pass through partially are called ______ material.
Materials that are not able to allow light to pass through, are called ______ material.
