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प्रश्न
The wavelengths for the light of red and blue colours are nearly 7·8 × 10-7 m and 4·8 × 10-7 m respectively.
Which colour has greater speed in glass?
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उत्तर
In glass, the red colour has a greater speed.
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संबंधित प्रश्न
Name three factors on which the deviation produced by a prism depends and state how does it depend on the factors stated by you.
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?
(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.
Light of different colours is deviated through different angles by a prism. Explain the reason.
What is understood by the term dispersion of light? What is its cause?
Name the radiation of a wavelength longer than 8 × 10−7 m.
Explain, why quartz prism is required for obtaining the spectrum of ultra-violet light?
Which colour of white light travels slowest, in glass?
