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Question
Observe the given figure and answer the following questions.
- Which colour light rays bend most?
- Which colour light rays bend least.
- What is the wavelength of violet light rays?
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Solution
- Violet coloured light rays bend the most.
- Red coloured light rays bend the least.
- The wavelength of violet light is close to 400 nm.
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In the following ray diagram the correctly marked angle are:
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(c) ∠i, ∠e and ∠D
(d) ∠r, ∠A and ∠D
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Out of air and glass, which is optically rarer? Give reason.
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State two properties of ultraviolet radiation which differ from visible light.
Distinguish between an impure spectrum and a pure spectrum.
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| (b) 700 nm | |
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Say TRUE or FALSE
After passing through a prism, white light splits into a band of seven colours
During dispersion of white light by prism placed in air, for a particular value of angle of prism,
______ colour is deviated the least in the spectrum of white light obtained with a glass prism.
