1.

A double slit experiment is performed with light of wavelength 500 nm. A thin film of thickness 2mu m and refractive index 1.5 is introduced in the path of the upper beam. The location of the central maximum will

Answer»

remain unshifted
shift downward by nearly TWO fringes
shift UPWARD by nearly two fringes
shift downward by 10 fringes

Answer :C


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