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प्रश्न
When light travels from a denser to a rarer medium, its speed ______.
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उत्तर
When light travels from a denser to a rarer medium, its speed increases.
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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.
State whether light slows down or speeds up in the following cases :
Light going from air to glass.
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?
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
Two medium with a refractive index of 1.31 & 1.50 is given. In which case
- The bending of light is more and
- speed of light is more.
Light travels a distance of '10x' units in time 't1' in vacuum and it travels a distance of 'x' units in time 't2' in a denser medium. Using this information answer the question that follows:
'Light covers a distance of '20x' units in time 't1' in diamond'. State true or false.
