In Young ’ s double slit experiment the separation d between the slits is 2 mm, the wavelength 
of the light used is 5896 
and distance D between the screen and slits is 100 cm. It is found that the angular width of the fringes is 
To increase the fringe angular width to 
(with same 
and D ) the separation between the slits needs to be changed to
Text Solution
Verified by ExpertsThe correct answer is:
B
: Angular width 
and 
Dividing we get, 
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