Question

The radius of curvature of a spherical mirror is 16 cm. What is the focal length ?

• A. 16 cm
• B. 8 cm
• C. 24 cm
• D. 32 cm

Answer 1

The Correct Option is B

To solve the problem, we need to find the focal length of a spherical mirror given its radius of curvature.

1. Using the Relationship Between Radius and Focal Length:
For a spherical mirror, the focal length ($f$) is half of the radius of curvature ($R$):

$ f = \frac{R}{2} $

2. Substituting the Given Radius:
$ R = 16 \, \text{cm} $

$ f = \frac{16}{2} = 8 \, \text{cm} $

Final Answer:
The focal length is $ 8 \, \text{cm} $.