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Name three factors on which the deviation produces by a prism depends and state how does it depend on the factors stated by you. |
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Answer» The deviation produced by the prism depends on the following four factors: (a) The angle of incidence - As the angle of incidence increases, first the angle of deviation decreases and reaches to a minimum value for a certain angle of incidence. By further increasing the angle of incidence, the angle of deviation is found to increase. (b) The material of prism (i.e., on refractive index) - For a given angle of incidence, the prism with a higher refractive index produces a greater deviation than the prism which has a lower refractive index. (c) Angle of prism- Angle of deviation increases with the increase in the angle of prism. (d) The colour or wavelength of light used- Angle of deviation increases with the decrease in wavelength of light. |
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