Question

find the focal length of a concave mirror whose radius of curvature is 64 cm​

Answer 1

Answer:

The focal length of a spherical mirror is equal to half the radius of curvature of that mirror.

The radius of curvature, R= 64cm

Radius of curvature = 2 — Focal length (f)

R= 2f=

f = R/2 = 64/2 = 32

Hence, the focal length of the given convex mirror is 32 cm.

Answer 2

Answer:

32 cm

Explanation:

$\boxed{ \color{blue} \dashrightarrow \: \color{red}Given :- \: \color{green}\dashleftarrow}$

Focal length = 64 cm

$\color{violet} \mathbb{We \: know \: that}$

$Focal \: \: length = \frac{radiu s \: of \: curvature}{2}$

$\: \: \: \: \: \: \: \: \implies \: \frac{64}{2}$

$\: \: \: \: \: \: \: \: \implies \boxed{ \: 32 \: cm}$