In Young's double slit experiment, the two slits act as coherent sources of equal amplitude A and wavelenth lambda. In another experiment with the same setup the two slits are sources of equal amplitude A and wavelength lambda but are incoherent. The ratio of the intensity of light at the midpoint of the screen in the first case to that in the second case is

In Young's double slit experiment, the two slits act as coherent sourc

1.	In Young's double slit experiment, the two slits act as coherent sources of equal amplitude A and wavelenth lambda. In another experiment with the same setup the two slits are sources of equal amplitude A and wavelength lambda but are incoherent. The ratio of the intensity of light at the midpoint of the screen in the first case to that in the second case is
Answer» `1:1` `2:1` `4:1` NONE of these Answer :B

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