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KVPY2011PhysicsRay Optics

A convex lens is used to form an image of an object on a screen. If the upper half of the lens is blackened so that it becomes opaque, then

Options

  1. Aonly half of the image will be visible
  2. Bthe image position shifts towards the lens
  3. Cthe image position shifts away from the lens
  4. Dthe brightness of the image reduces

Correct answer

D. the brightness of the image reduces

Step-by-step solution

Only half part of the lens will be used so its intensity will be decreased

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