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प्रश्न
Which colour of white light travels fastest in any medium except air?
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उत्तर
All media except air allow red light to travel at the fastest speed.
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संबंधित प्रश्न
If the speed of light in vacuum is 3 × 108 ms−1, find the speed of light in a medium of absolute refractive index 1.5.
When light travels from a rarer to a denser medium, its speed ______.
Draw a ray diagram showing the lateral displacement of a ray of light when it passes through a parallel sided glass slab.
Choose the correct alternative and rewrite the following:
A glass slab is placed in the path of convergent light. The point of convergence of light
Name the phenomenon responsible in the following case:
Apparent bending of a stick in water
Comment on the statement ‘The refractive index of glass is 3/2.’
Define the term refractive index of a medium in terms of velocity of light.
How is the refractive index of a medium related to its real depth and apparent depth?
A ray of light moves from a rare medium to a dense medium as shown in the diagram below. Write down the number of the ray which represents the partially reflected ray.
A ray of monochromatic light is incident from air into a glass slab. Draw a labelled ray diagram indicating the change in its path till it emerges out of the slab. In the diagram, mark the angle of incidence (i) and the angle of refraction (r) at the first interface. How is the refractive index of glass related to the angles i and r?
