How will the image formed by a convex lens be affected, if the central portion of the lens is wrapped in black papar as shown in the figure:
A) full image will be formed but without central portion
B) two image will be formed one due to each exposed half
C) full image will be formed but it is less bright
D) no image will be formed
Correct Answer: C
Solution :
In the convex lens the rays are converted to a point on the other side lens when the parallel rays are incident on the surface of the lens. If the central portion of the lens wrapped by black paper, full image will be form but with a less brightness.
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