IIT JEE Advanced 2008 Paper 1

Section: Physics

Question : 7 of 69

Marks: +1, -0

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).

[JEE Adv 2008 P1]

If d = λ, the screen will contain only one maximum.
If λ < d < 2 λ, at least one more maximum (besides the central maximum) will be observed on the screen.
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.
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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