Question

Find the focal length of (i) concave mirror and (ii) a convex lens each having radius of curvature of 20 cm.

Answer 1

$\textbf{Check the Attachment}$⬆⬆⬆


Be Brainly.


@karangrover12.

Answer 2

HEY MATE HERE IS YOUR ANSWER

Part (<ii>) to measure the for to measure the focal length of a convex lens using the formula
$\frac{1}{u} + \frac{1}{v} = \frac{1}{f}$
from this formula you can find the focal length of convex lens

Part (<i>) To find focal length of concave mirror in concave mirror the distance between the pole P of the concave mirror and the focus f is the focal length of a concave mirror does the focal length of concave mirror can be estimated by obtaining a real image of a distant object as its focus.


Hope it will help you