Question

find the radius of curvature of a spherical mirror having focal length 30 cm​

Answer 1

Here we have a formula

The relation between focal length and radius of curvature.

2f= R

2×30 =R

60 Cm =R

Here, radius of curvature = 60 Cm.

Regard.

Answer 2

Answer: Given,

f = 30 cm

Therefore f = r/2

30 = r/2

30×2 = r

r = 60 cm

Explanation: