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प्रश्न
For which colour of white light the refractive index of a transparent medium the most? Give the reason for your answer.
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उत्तर
The refractive index of a transparent medium is least for the red light.
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संबंधित प्रश्न
Why is the ratio of the velocities of light of wavelengths 4000Å and 8000Å in vacuum 1: 1?
When light travels from a rarer to a denser medium, its speed ______.
-
- the angle of refraction and
- the angle of deviation for the ray?
Define the term refractive index of a medium. What do you understand by the statement 'the refractive index of glass is 1.5 for white light'?
In the diagram below, PQ is a ray of light incident on a rectangular glass block.
Copy the diagram and complete the path of the ray of light through the glass block. In your diagram, mark the angle of incidence by letter ‘i’ and the angle of emergence by the letter ‘e’.
Complete the ray diagram showing its emergence into the air after passing through the prism.
The speed of light in air is 3 × 108 ms-1. Calculate the speed of light in water. The refractive index of water is 4/3.
Consider these indices of refraction: glass: 1.52; air: 1.0003; water: 1.333. Based on the refractive indices of three materials, arrange the speed of light through them in decreasing order.
