Question

you are provided with two convex lenses of focal length 15cm and 25cm respectively.which of the two is of larger power? give reason for your answer

Answer 1

convex lens of focal length 15cm is of larger power.

REASON:--

POWER = 1÷focal length
as
$\frac{1}{15} > \frac{1}{25}$
so my answer is justified

Answer 2

Answer:

Power = 1/ focal length

P= 1/f

So,

Power of a lens is inversely proportional to its focal length therefore lens having focal length of 20 cm will provide more convergence.

Explanation:

hope it helps you

Thank you!!