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In Young's double slit experiment, the two slits act as coherent sources of equal amplitude A and of wavelength lambda.In another experiment with same set up, the two slits are sources of equal amplitude A and wavelength lambda, but are incoherent.The ratio of intensty of light at the mid - point of the screen in the first case to that in the second case is : |
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Answer» SOLUTION :In case of coherent SOURCES `I_(max) = 4a^(2) = 4I` In case of non- coherent sources `I = a_(1)^(2) + a_(2)^(2) = 2a^(2) = 2I` `(I_(max))/(I) = (4I)/(2I) = (2)/(I) = 2` |
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