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KVPY2017PhysicsWave Optics

Consider a plane parallel beam of light incident on a plano-cylindrical lens as shown below. Which of the following will you observe on a screen placed at the focal plane of the lens ?

Options

  1. AThe screen will be uniformly illuminated.
  2. BThere will be a single bright spot on the screen.
  3. CThere will be a single bright line on the screen parallel to the x -axis
  4. DThere will be a single bright line on the screen parallel to the y-axis

Correct answer

D. There will be a single bright line on the screen parallel to the y-axis

Step-by-step solution

no deflection of light beam

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