In a Young's double slit experiment, the separation between the two slits is d and the wavelength of the light is λ . The intensity of light falling on slit 1 is four times the intensity of light falling on slit 2. Choose the correct choice(s).
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(a,b)
If d = λ , then maximum path difference will be less than λ . So there will be only central maximum on the screen.
If λ < d < 2 λ , then the maximum path difference will be less than 2 λ .
So there will be two more maximum on screen
corresponding to path difference Δ x = λ
So and are correct.
Intensity of dark fringe becomes zero when intensities of two slits are equal. Initial intensity at both the slits are unequal so there will some brightness at dark fringe. Hence when intensity of both slits is made same the intensity at dark on screen shall decrease to zero. So both and are false.
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