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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,

a
P
b
0
c
P2
d
P4

detailed solution

Correct option is A

If lens is cut in two half as shown in the figure, then power of one part will be same. i.e. P, as focal length remains same.

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