The intensity at the maximum in a Young's double slit experiment is 
. Distance between two slits is 
, where 
is the wavelength of light used in the experiment. What will be the intensity infront of one of the slits on the screen placed at a distance 
? [NEET 2016]
Text Solution
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In the above figure, 
and 
are the two different slits.
Given, distance between slits 
and 
distance between screen and slits,
Here, 
is the wavelength of light used in the experiment.
According to question, the intensity at maximum in this Young's double slit experiment is 
.
Path difference 
A path difference of 
corresponds to phase difference 
, so for path difference 
, phase difference
As we know, 
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