Ray Optics And Optical Instruments Ques 24
24. 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 Odisha 2019]
$P$
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(c) $\frac{P}{2}$
(d) $\frac{P}{4}$
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Answer:
Correct Answer: 24.(a)
Solution:
When a lens is cut into two halves, the power of one part will be half. i.e., $P/2$, as focal length changes.
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