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प्रश्न
The wavelengths for the light of red and blue colours are nearly 7·8 × 10-7 m and 4·8 × 10-7 m respectively.
Which colour has greater speed in glass?
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उत्तर
In glass, the red colour has a greater speed.
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संबंधित प्रश्न
Why is the colour red used as a sign of danger?
Which colour of white light travels fastest in glass?
(i) Draw a diagram to show the splitting of white light by a prism into its constituent colour.
(ii) Draw another diagram to show how the colours of spectrum of white light can be combined
to give the effect of white light.
Write the approximate wavelengths for blue.
Light of different colours is deviated through different angles, by a prism. Explain the reason.
Name the radiation of a wavelength longer than 8 × 10−7 m.
Explain, why quartz prism is required for obtaining the spectrum of ultra-violet light?
Draw a neat diagram to show the arrangement you would use to project a pure spectrum of white light on a screen.
Which colour of white light travels slowest, in glass?
