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प्रश्न
Compare the speeds of light of wavelength 4000 Å (i.e. violet light) and 8000 Å (i.e. red light) in vacuum.
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उत्तर
Speed of light depends on medium not on wavelength hence speed will be same for both.
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संबंधित प्रश्न
Select the correct alternative
The speed of light is maximum in
A light ray passes from water to
- air, and
- glass.
In each case, state how does the speed of light change.
When light travels from a denser to a rarer medium, its speed ______.
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.
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.
What is the speed of light in vacuum?
Materials that allow light to pass through completely are known as ______ material.
Materials that allow light to pass through completely are known as transparent materials.
Light is one of the slowest traveling energy with a speed of 3 × 10-8ms-1
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.
