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प्रश्न
A ray of light is incident at 45° on an equilateral prism in the diagram below.
- Name the phenomenon exhibited by the ray of light when it enters and emerges out of the prism.
- State the cause of the above phenomenon mentioned by you.
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उत्तर
- When light enters the prism and experiences refraction upon exiting, it is said to have undergone dispersion.
- It disperses because the incident light is a polychromatic ray made up of different light wave lengths. As light travels from a denser medium to a rarer medium, refraction takes place.
संबंधित प्रश्न
Define the term dispersion of white light.
What are the seven colours seen in a rainbow?
The speed of light in air or vacuum is
A wave has wavelength 50Å of State its one use.
Say TRUE or FALSE
Rainbow is formed by dispersion of which light by water drops
Why do we see a rainbow in the sky only after rainfall?
______ colour is deviated the least in the spectrum of white light obtained with a glass prism.
The dispersive powers of flint glass and crown glass are 0.053 and 0.034, respectively and their mean refractive indices are 1.68 and 1.53 for white light. Calculate the angle of the flint glass prism required to form an achromatic combination with a crown glass prism of refracting angle 4°:
State the colour which bends:
- The most.
- The least while passing through a glass prism.
