Question

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

Answer 1

Answer:

R= 20 cm

Radius of curvature of a spherical mirror = 2 × Focal length (f)

R= 2f

f= R/2 = 20 / 2 = 10

Hence, the focal length of the given spherical mirror is 10 cm

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Explanation:

Answer 2

Explanation:

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

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