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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.
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संबंधित प्रश्न
What is spectrum?
The colour of white light which suffers the maximum bending (or maximum refraction) on passing through a glass prism is:
(a) yellow
(b) orange
(c) red
(d) violet
Why do you not see a spectrum of colours when light passes through a flat pane of glass?
The seven colours in the spectrum of sunlight in order, are represented as :
In figure AO is the ray of white light falling on a prism PQR. Complete the diagram till the light emerges out from the prism and falls on the screen.
The wavelength range of white light is ______.
Write the range of wavelength of the visible spectrum.
The process of separation of light into its component colours while passing through a medium is called _______.
The phenomena of light involved in the formation of rainbow are ______.
The angle of deviation through a prism is minimum when
- Incident rays and emergent rays are symmetric to the prism.
- The refracted ray inside the prism becomes parallel to its base.
- The angle of incidence is equal to that of the angle of emergence.
- When the angle of emergence has doubled the angle of incidence.
Choose the correct answer from the options given below:
