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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?
Name three factors on which the deviation produced by a prism depends and state how does it depend on the factors stated by you.
Which colour of white light travels fastest in glass?
In following figure shows a thin beam of white light from a source S striking on one face of a prism.
Complete the diagram to show effect of prism on the beam and to show what is seen on the screen.
(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.
Give a reason, why the violet colour of white light deviated most and red colour of white light deviated least.
What is understood by the term dispersion of light? What is its cause?
Which colour of white light travels slowest, in glass?
Write the approximate wavelength for red light.
