question_answer

At two points P and Q on 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:

A) \[2:1\]

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

C) \[4:1\]

D) \[3:2\]