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MHT CET202615 April 2026Morning ShiftPhysicsWave OpticsActual

Light of wavelength is incident on a single slit of width 'a' and the distance between slit and screen is D. In diffraction pattern, if slit width is equal to the width of the central maximum then D is equal to

Options

  1. Aa^2 2
  2. Ba 2
  3. Ca^2
  4. Da

Correct answer

A. a^2 2

Step-by-step solution

The linear width of the central maximum in a single slit diffraction pattern is given by W = 2 D a . Given that the width of the central maximum is equal to the slit width, we have W = a . Equating the two expressions: 2 D a = a 2 D = a^2 D = a^2 2

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