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KCET2012PhysicsWave Optics

In single slit experiment, the width of the slit is reduced. Then, the linear width of the principal maxima

Options

  1. Adecreases but becomes less bright
  2. Bincreases but becomes less bright
  3. Cdecreases but becomes more bright
  4. Dincreases but becomes more bright

Correct answer

B. increases but becomes less bright

Step-by-step solution

If width of slit is reduced in a single slit diffraction. Width of central maxima = 2 D a will increase but intensity of central maxima will decrease less number of waves will superpose at the centre.

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