Single Answer MCQ
Q-00040284
What is the focal length of a concave mirror with a radius of curvature of 30 cm?
1
15 cm
2
30 cm
3
60 cm
4
Not applicable
Answer and Solution
Answer
A. 15 cm
Solution:
The focal length (f) of a concave mirror is given by f = R/2. Therefore, the focal length is 30 cm / 2 = 15 cm. Hence, option A is correct.
Watch Video Solution