Advertisements
Advertisements
प्रश्न
Give a reason, why the violet colour of white light deviated most and red colour of white light deviated least.
Advertisements
उत्तर
The reason is that the speed of violet light in glass is least while that of red light is most. Since. Refractive index of glass = speed of light in air/speed of light in the glass, so the refractive index of glass (the material of prism) is most for violet light and least for the red light. Hence, the violet light has deviated most and red light is deviated least.
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?
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.
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.
Name the radiation of a wavelength longer than 8 × 10−7 m.
Which colour of white light travels slowest, in glass?
Write the approximate wavelength for red light.
