question_answer

In Young's double slit interference experiment, the slit widths are in the ratio 1 : 25. Then the ratio of intensity at the maxima and minima in the interference pattern is [JEE ONLINE 26-05-2012]

A) 3 : 2

B) 1 : 25

C) 9 : 4

D) 1 : 5

Correct Answer: C

Solution :

[c] We know that,

and  are maximum and minimum intensity andare widths of two slits

On solving we get,