The slits in a double slit interference experiment are illuminated by orange light ( 
). A thin transparent plastic of thickness 
is placed in front of one of the slits. The number of fringes shifting on screen is plotted versus the refractive index 
of the plastic in graph. The value of 
in 
is
Text Solution
Verified by ExpertsThe correct answer is:
A
Let 
be no. of fringes shifted
So, shift of central maxima 
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