GP Light

While looking at the image formed by a convex lens (one half of the lens is covered with black paper), which one of the following will happen to the image?

  1. Half of the image will be visible
  2. One can see an image of smaller size
  3. Intensity of the image will be diminished
  4. Image will be inverted

Answer

The intensity of the image will be lesser when one half of the lens is covered with a black paper because the light gathering power of a lens depends upon its diameter. The image formed will still be of full size.

The correct option is C.