Question

the radius of curvature of a spherical mirror is 20 cm what is its focal length??​

Answer 1

$\pink{\huge{\underline{\underline{♡Answer♡}}}}$

The radius of curvature of a spherical mirror is 20 cm.

so,

f = R/2

=20/2 =10cm

so,the focal length will be be 10cm

_____________________________

Answer 2

$\huge{\underline{\mathtt{\red{❥A}\pink{N}\green{S}\blue{W}\purple{E}\orange{R}}}}$

The radius of curvature of a spherical mirror is 20 cm.

so,

f = R/2

=20/2 =10cm

so,the focal length will be be 10cm

_____________________________