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MHT CET202416 May 2024Morning ShiftPhysicsWave OpticsActual

The angular separation of the central maximum in the Fraunhofer diffraction pattern is measured. The slit is illuminated by the light of wavelength 6000 Å . If the slit is illuminated by light of another wavelength, the angular separation decreases by 20 % . The wavelength of light used is

Options

  1. A6400 Å
  2. B5600 Å
  3. C4800 Å
  4. D4400 Å

Correct answer

C. 4800 Å

Step-by-step solution

The angular width of central maximum is array ll & = 2 a & ₂ ₁ = ₂ ₁ & For ₂= ₁- 20 100 ₁=0.8 ₁ & ₂=0.8 ₁=0.8 6000=4800 Å array

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