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Two slits in Young's experiment have widths in the ratio 1 : 25. The ratio of intensity at the maxima and minima in the interference pattern, I m a x I m i n is:

Options

  1. A121 49
  2. B49 121
  3. C4 9
  4. D9 4

Correct answer

D. 9 4

Step-by-step solution

I 1 I 2 = 25 1 ⇒ A 1 A 2 = 5 1 A m a x A m i n = 5 + 1 5 - 1 = 6 4 = 3 2 I m a x I m i n = 3 2 2 = 9 4

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