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MHT CET 2026 (16 Apr, Shift 1) · YDSE: Film, Medium & Two Wavelengths

YDSE: Film, Medium & Two Wavelengths question from MHT CET 2026 (16 Apr, Shift 1)

Q17MHT CET 2026 · 16 APR · SHIFT 1Medium

YDSE: Film, Medium & Two Wavelengths

In Young's double slit experiment, the distance between the slits is 3 mm and the slits are 2m away from the screen. Two interference patterns can be obtained on the screen due to light of wavelength 480 nm and 600 nm respectively. The separation on the screen between the 55th order bright fringes on two interference patterns is

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Answer: (d)

  1. Δy=n(λ2−λ1)Dd\Delta y = \dfrac{n(\lambda_2 - \lambda_1)D}{d}
  2. Δy=5×120×10−9×23×10−3=4×10−4 m\Delta y = \dfrac{5 \times 120\times10^{-9} \times 2}{3\times10^{-3}} = 4\times10^{-4}\text{ m}
  3. So the answer is (d) 4×10−44 \times 10^{-4} m.
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