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In the spectrum of white light by a prism, the colour at the extreme end opposite to the base of prism is:(a) violet (b) yellow(c) red (d) blue |
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Answer» The colour of the extreme end opposite to the base of the prism is red. Hint: The angle of deviation decreases with the increase in wavelength of light for a given angle of incidence. Since the red light has greatest wavelength, it gets deviated the least and is seen on the extreme end opposite to the base of prism. |
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