What do you understand by deviation produced by the prism and why it is caused
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In a prism the ray of light suffers refraction at two faces. The prism produces a deviation at the first surface and another deviation at the second surface. Thus a prism produces a deviation in the path of light. The value of the angle of deviation (or the deviation produced by a prism) depends on the following four factors: (a) the angle of incidence (i), (b) the material of prism(i.e., on refractive index μ), (c) the angle of prism (A), (d) The colour or wavelength (λ) of light used.
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