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प्रश्न
How does the angle of deviation produced by a prism depend on the colour of light used? Which colour of white light is deviated (i) most, (ii) least, by a prism?
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उत्तर
The angle of deviation produced by a prism increases with the decrease in wavelength of the light used.
(i) Violet light is deviated most by a prism.
(ii) Red light is deviated least by a prism.
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संबंधित प्रश्न
Define refraction and state the laws of refraction.
Explain how the formation of a rainbow occurs.
Why do we get a spectrum of seven colors when white light is dispersed by a prism?
Which of the above wavelengths has a higher frequency?
What is meant by the statement the critical angle for diamond is 24°?
A student traces the path of a ray of white light through a rectangular glass slab and marks, the angles of incidence (∠i) , refraction (∠r) and emergence (∠e) as shown. Which angle or angles has he not marked correctly?

(A) ∠i only
(B) ∠i and ∠r
(C) ∠i and ∠e
(D) ∠r and ∠e
Which colour of light travels fastest in any medium except air?
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’.
Draw a diagram to show the refraction of a monochromatic light ray through an equilateral prism. On the diagram, label the incident, refracted, and emergent rays. It also indicates the angle of deviation by the letter δ.
In the diagram alongside a ray of light, PQ is incident normally on one face AB of an equilateral glass prism. What is the angle of incidence at the faces AB and AC?

