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प्रश्न
Explain, why quartz prism is required for obtaining the spectrum of ultra-violet light?
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उत्तर
The reason is that glass absorbs ultra-violet radiation while the quartz does not absorb them.
संबंधित प्रश्न
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?
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.
In following diagram shows a thin beam of white light from a source S striking on one face of a prism.
What conclusion do you draw from the observation in part (b) above?
Write the approximate wavelengths for blue.
Draw another diagram to show how the colours of spectrum of white light can be combined to give the effect of white light.
Name the radiation of a wavelength longer than 8 × 10−7 m.
Draw a neat diagram to show the arrangement you would use to project a pure spectrum of white light on a screen.
Comment on the statement: ‘When any ray of white light is incident on a glass prism, it simply disperses it into its seven constituent colours.
