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Question
Explain, why quartz prism is required for obtaining the spectrum of ultra-violet light?
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Solution
The reason is that glass absorbs ultra-violet radiation while the quartz does not absorb them.
RELATED QUESTIONS
Why is the colour red used as a sign of danger?
How does the deviation produced by a triangular prism depend on the colours (or wavelengths) of light incident on it?
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.
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.
Draw a neat diagram to show the arrangement you would use to project a pure spectrum of white light on a screen.
Write the approximate wavelength for red light.
