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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.
संबंधित प्रश्न
A student traces the path of a ray of light through a rectangular glass slab for the different values of angle of incidence. He observes all possible precautions at each step of the experiment. At the end of the experiment, on analyzing the measurements, which of the following conclusions is he likely to draw?
(A) ∠i = ∠e < ∠r
(B) ∠i < ∠e < ∠r
(C) ∠i > ∠e > ∠r
(D) ∠i = ∠e > ∠r
A student very cautiously traces the path of a ray through a glass slab for different values of the angle of incidence (∠i). He then measures the corresponding values of the angle of refraction (∠r) and the angle of emergence (∠e) for every value of the angle of incidence. On analysing these measurements of angles, his conclusion would be
(A) ∠i > ∠r > ∠e
(B) ∠i = ∠e > ∠r
(C) ∠i < ∠r < ∠e
(D) ∠i = ∠e < ∠r
How is the refractive index of a medium related to the speed of light in it?
With the help of diagram of the principal section of a prism, indicate its refracting surfaces, refracting edge and base.
An object is viewed through a glass prism with its vertex pointing upwards. It appears to be displaced upward. Explain the reason.
Why does a fisherman aim at the tail of fish during spearfishing?
Does the depth of a tank of water appear to change or remain the same when viewed normally from above?
Draw ray of light bending towards the normal while passing from glass to water. Label your diagrams.
