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प्रश्न
Explain the cause of dispersion of white light through a prism.
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उत्तर
When white light is incident on the first surface of a prism and enters glass, light of different colours due to different speeds in glass, is refracted or deviated through different angles. Thus, the dispersion of white light into its constituent colours takes place at the first surface of the prism. Thus, the cause of dispersion is the change in the speed of light with wavelength or frequency.
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संबंधित प्रश्न
A beam of white light falls on a glass prism. The colour of light which undergoes the least bending on passing through the glass prism is:
(a) violet
(b) red
(c) green
(d) blue
The seven colours in the spectrum of sunlight in order, are represented as :
Which is optically denser: water or air? Give reason
Refer to fig
(i) Name the lens L.
(ii) What are the points O, O' called?
(iii) Complete the diagram to form the image of the object AB.
(iv) Write three characteristics of the image.
A wave has wavelength 50Å of name the wave.
The splitting of white light in to seven colors is called ______.
What is dispersion? Explain in detail.
Name the scientist who was the first to use a glass prism to obtain the spectrum of sunlight.
dispersive power of crown glass? Given that µv = 1.5230, µr = 1.5145
