In double slit experiment, instead of taking slits of equal widths, one slit is made twice as wide as the…

In double slit experiment, instead of taking slits of equal widths, one slit is made twice as wide as the other. Then in interference pattern
  1. the intensity of the maxima decreases and the minima has zero intensity.
  2. the intensity of maxima decreases and that of the minima increases.
  3. the intensity of the maxima increases and the minima has zero intensity.
  4. the intensities of both the maxima and the minima increase.

Solution

$I_{\min } \propto(a-a)^2$
Later, $I_{\min } \propto(2 a-a)^2$
Clearly, the intensity of minima increases, Again, $I_{\max } \propto(a+a)^2$ Later, $I_{\max } \propto(2 a+a)^2$ Clearly, the intensity of maxima increases. .

Asked in: MHT CET 2024 (15 May Shift 1)

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