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In a Young's double slit experiment, the...

In a Young's double slit experiment, the separation between the two slits is d and the wavelength of the light is `lamda`. The intensity of light falling on slit 1 is four times the intensity of light falling on slit 2. Choose the correct choice (s).

A

If `d=lambda`, the screen will contain only one maximum.

B

If `lambda lt d lt 2lambda`, at least one more maximum (besides the central maximum) will be observed on the screen.

C

If the intensity of light failing on slit 1 is reduced so that it becomes equal to that of slit 2, the intensities of the observed dark and bright fringes will increase.

D

If the intensity of light falling on slit 2 is increased so that it becomes equal to that of slit 1, the intensities of the observed dark and bright fringes will increase.

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The correct Answer is:
A, B
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