1. Tardigrade
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  4. A symmetrical biconvex lens of focal length 'f' is cut into four identical pieces along its principal axis and perpendicular to the principal axis. The focal length of one of the four pieces is

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Q. A symmetrical biconvex lens of focal length 'f' is cut into four identical pieces along its principal axis and perpendicular to the principal axis. The focal length of one of the four pieces is

Solution:

Correct answer is (c) $ 2f $