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प्रश्न
What do you understand by the deviation produced by a prism?
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उत्तर
When a ray of light passes through a prism, it bends towards the base of the prism. Thus, the path of the emergent ray differs from the path of the incident ray. This is called the deviation produced by a prism.
संबंधित प्रश्न
Explain how the formation of a rainbow occurs.
Write a relationship between the angle of incidence and angle of refractions for a given pair of media
In the adjacent diagram, AO is a ray of light incident on a rectangular glass slab.
- Complete the path of the ray 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?
- Mark angles of emergence by the letter e. How are the angles i and e related?
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- Indicate in the diagram the lateral displacement between the emergent ray and the incident ray. State one factor that affects the lateral displacement.
Name the colour of white light which is deviated the most on passing through a prism.
Fig shows a lens as a combination of a glass block and two prisms.
(i) Name the lens formed by the combination.
(ii) what is the XX' called?
(iii) Complete the ray diagram and show the path of the incident ray PQ after passing through the lens.
(iv) The final emergent ray will either meet XX' at a point or appear to come from a point on XX'. what is the point called?
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Why is the light of a single colour used ?
Complete the ray diagram showing its emergence into the air after passing through the prism.
The diagram shows the path of a ray of light through a rectangular glass block placed in a liquid of uniform density.
What is the angular, deviation of the emergent ray from the glass block with respect to the incident ray?
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.
