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

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

A

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

B

If `lamdaltdlt2lamda`, at least one more maximum (besides the central maximum) will be observed on the screen

C

If the intensity of light falling 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 bacomes equal to that of slit 1, the intensities of the obserbed dark and bright fringes will increase

Text Solution

Verified by Experts

The correct Answer is:
A, B
For `d=lamda`, there will be only one central maxima.
`lamdaltdlt2lamda`, there will be three maxima on the screen corresponding to path difference,
`trianglex=0` and `trianglex=+-lamda`
Correct option are (a) and (b).
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