Physics, asked by gd276001, 8 months ago

The radius of curvature of a concave mirror is 40cm. What is its focal length?

Answers

Answered by rakshit9847

3

Answer:

$f = 1 \div r \\ \\ f = 1 \div 40 \\ \\ as \: is 1 \div f$

Answered by ekamghuman43617

9

꧁ANSWER꧂

Since the focal length is half the length of the radius of curvature. The focal length comes out to be 20 cm.

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