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प्रश्न
State whether light slows down or speeds up in the following cases :
Light going from glass to water.
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उत्तर
Speeds up
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संबंधित प्रश्न
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.
When light travels from a denser to a rarer medium, its speed ______.
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?
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)
Materials that allow light to pass through completely are known as ______ material.
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.
Define opaque material.
Light is one of the slowest traveling energy with a speed of 3 × 10-8ms-1
