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प्रश्न
Out of air and glass, which is optically rarer? Give reason.
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उत्तर
Air is RARER as the speed of light in air is more than the speed of light in glass.
3 × 108 ms-1 > 2 × 108 ms-1
speed of light in air > speed of light in glass
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संबंधित प्रश्न
In the following diagram, the path of a ray of light passing through a glass prism is shown:
In this diagram the angle of incidence, the angle of emergence and the angle of deviation respectively are (select the correct option):
(A) X, R and T
(B) Y, Q and T
(C) X, Q and P
(D) Y, Q and P
What happens when a ray of ordinary light is passed through a triangular glass prism?
A beam of white light is shone onto a glass prism. The light cannot be:
(a) deviated
(b) dispersed
(c) focused
(d) refracted
When a white light ray falls on a prism, the ray at its first surface suffers ______.
A glass prism is able to produce the spectrum when white light passes through it, but a glass slab doesn’t produce any spectrum. Explain why it is so.
If white light is used in same way what change is expected in the emergent beam?
Rainbow is a beautiful natural phenomenon. It is the combined effect of a natural three processes together produced by light. Write it into the circle.
What is a rainbow?
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:
In the following diagram showing dispersion of white light by a glass prism, the colours 'P' and 'Q’ respectively are:
