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प्रश्न
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.
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उत्तर
The refractive index of water `="Speed of light in air"/"Speed of light in water"`
∴ Speed of light in water `="Speed of light in air"/"Refractive index of water"`
= `(3xx10^8)/(4//3)`
= 2.25 × 108 ms−1.
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.
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- air to glass, and
- glass to air. In each diagram, label the incident ray, refracted ray, the angle of incidence
- and the angle of refraction (r).
The highest refractive index is of ______.
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(A) I
(B) II
(C) III
(D) IV
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Why is the light of a single colour used ?
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A ray of monochromatic light is incident from the air on a glass slab:
(i) Draw a labelled ray diagram showing the change in the path of the ray till it emerges from the glass slab.
(ii) Name the two rays that are parallel to each other.
(iii) Mark the lateral displacement in your diagram.
