Physics-
General
Easy
Question
A parallel beam of light 500 nm is incident at an angle 30° with the normal to the slit plane in a young's double slit experiment. The intensity due to each slit is Io. Point O is equidistant from 
and 
. The distance between slits is 1 mm.
- the intensity at O is 4Io
- the intensity at O is zero.
- the intensity at a point on the screen 4 mm from O is 4 IIo
- the intensity at a point on the screen 4 mm from O is zero.
The correct answer is: the intensity at O is 4Io
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