Question

The radius of curvature of a spherical mirror is 20cm. What is its focal length?​

Answer 1

Answer:

The radius of curvature of a spherical mirror is 20 cm. What is its focal length? Therefore, the focal length of the spherical mirror is 10 cm.

Answer 2

Answer:

Radius of curvature (r) = 20cm

Focal length (f) = ?

$r \: = \: 2f \\ f = \frac{20}{2} \\ f = 10 \: cm$

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