Question

SECTION - B
Previous Years Questions
An equiconvex lens has power P. It is cut into two
symmetrical halves by a plane containing the
principal axis. The power of one part will be,
[NEET - 2019 (Odisha)]
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Answer 1

In general usage, symmetry most often refers to mirror or reflective symmetry; that is, a line (in 2-D) or plane (in 3-D) can be drawn through an object such that the two halves are mirror images of each other. An isosceles triangle and a human face are examples.

Answer 2

Answer: p/2

Explanation: The new focal length will become twice that of the before then the new power will be half that of the before