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AP EAMCET2005PhysicsWave Optics

A light ray of wavelength is passing through a pin hole of diameter D and the effect is observed on a screen placed at a distance L from the pin hole. The approximations of geometrical optics are applicable, if

Options

  1. AD
  2. BL D^2 =1
  3. CL D^2 < < 1
  4. DL D^2 >>1

Correct answer

C. L D^2 < < 1

Step-by-step solution

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