question_answer

At two points P and Q on a screen in Young's double slit experiment, waves from slits \[{{S}_{1}}\] and \[{{S}_{2}}\] have a path difference of 0 and \[\frac{\lambda }{4}\]respectively. The ratio of intensities at P and Q will be:[AIEEE 11-05-2011]

A) \[2:1\]

B) \[\sqrt{2}:1\]

C) \[4:1\]

D) \[3:2\]

Correct Answer: A

Solution :

[a]