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प्रश्न
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?
उत्तर
Yes it will. When the medium changes, the speed of light changes.
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संबंधित प्रश्न
Write true or false of the following statement.
The speed of light in vacuum is 3 × 108 ms-1.
Select the correct alternative
The speed of light is maximum in
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.
State whether light slows down or speeds up in the following cases :
Light going from water to air.
A light ray suffers reflection and refraction at the boundary in passing from air to water. Draw a neat labelled ray diagram to show it.
Compare the speeds of light of wavelength 4000 Å (i.e. violet light) and 8000 Å (i.e. red light) in vacuum.
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)
