Question

A biconcave lens of power p vertically splits into two identica
concave parts. The power of each part will be
(a) 2P
P/2
(c) P
(d) PN2​

Answer 1

There is no change in power and will remain same.

Option (C) is correct.

Explanation:

• A the lens is biconcave, therefore in biconcave lens the focal length of ecah lens is "f".
• Even if the lens splits into two parts then its focal length will be same.
• As the focal length will remain same therefore there will be no change in the power of the lens.
• Thus we can say that there is no change in power and will remain same.