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NEET UG PHYSICS MCQ: WAVE OPTICS

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Analyzing +4 | -1
In YDSE, let AA and BB be two slits. Films of thicknesses tAt_A and tBt_B and refractive indices μA\mu_A and μB\mu_B are placed in front of AA and BB, respectively. If μAtA=μBtB\mu_A t_A=\mu_B t_B, then the central maxima will:
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Correct option: D
If tB>tAt_B > t_A and if tB<tAt_B < t_A
Option A (Not shift) is correct because if μAtA=μBtB\mu_A t_A = \mu_B t_B, the optical path lengths introduced by the films are equal, resulting in no shift of the central maxima.

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