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CGP EDU Academic Team
Published on: August 13, 2026
A Young ’ s double slit interference arrangement with slits S 1 and S 2 is immersed in water (refractive index = 4/3) as shown in the figure. The positions of maxima on the surface of water are given by x 2 = p 2 m 2 
2 – d 2 , where 
is the wavelength of light in air (refractive index = 1), 2d is the separation between the slits and m is an integer. The value of p is
Text Solution
Verified by ExpertsThe correct answer is:
3
(3)For maxima,
, m is an integer
So, 
p = 3
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