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प्रश्न
What is understood by the term dispersion of light? What is its cause?
उत्तर
The splitting of white light into its constituents colours when white light passes through a prism is called dispersion of light.
The cause of dispersion is the deviation of light of different colours through different angles, by a prism.
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संबंधित प्रश्न
How does the deviation produced by a triangular prism depend on the colours (or wavelengths) of light incident on it?
In following diagram shows a thin beam of white light from a source S striking on one face of a prism.
A slit is placed in between the prism and the screen to pass only the light of green colour. What will you then observe 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?
If a monochromatic beam of light undergoes minimum deviation through an equiangular prism, how does the beam pass through the prism, with respect to its base?
Fig shows part of the arrangement for obtaining pure spectrum.
(a) Complete thediagram and show how to obtain a pure spectrum.
(b) What are the conditions necessary for obtaining a pure spectrum?
Name the radiation of a wavelength longer than 8 × 10−7 m.
A prism causes dispersion of white light while a rectangular glass block does not. Explain.
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.
Which colour of white light travels slowest, in glass?
