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How does the value of angle of deviation produced by a prism change with an increase in the : 1. value of angle of incidence 2. wavelength of incident light? |
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Answer» 1. When the angle of incidence increases angle of deviation first decreases till it reaches the value known as minimum deviation position. After that with the increase in angle of incidence angle of deviation also increases. 2. Angle of deviation decreases with increase in the wavelength of light, so angle of deviation is maximum for violet light and least for red light. |
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