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MHT CET 2023 (12 May, Shift 2) · YDSE: Film, Medium & Two Wavelengths

YDSE: Film, Medium & Two Wavelengths question from MHT CET 2023 (12 May, Shift 2)

Q41MHT CET 2023 · 12 MAY · SHIFT 2Medium

YDSE: Film, Medium & Two Wavelengths

In Young's double slit experiment when a glass plate of refractive index 1.44 is introduced in the path of one of the interfering beams, the fringes are displaced by a distance 'yy'. If this plate is replaced by another plate of same thickness but of refractive index 1.66, the fringes will be displaced by a distance

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Answer: (a)

  1. Shift y=(μ−1)tDd∝(μ−1)y = \frac{(\mu-1)tD}{d} \propto (\mu-1) for the same tt.
  2. y′y=0.660.44=32\frac{y'}{y} = \frac{0.66}{0.44} = \frac{3}{2}
  3. So the answer is (a) 3y2\frac{3y}{2}.
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