Question
Physics Question on spherical lenses
An object is placed at a certain distance on the principal axis of a concave mirror. If the image distance (v) is 30 cm and radius of curvature (R) of the mirror is 20 cm, find the object distance (u)
A
10 cm
B
15 cm
C
30 cm
D
7.5 cm
Answer
15 cm
Explanation
Solution
The correct option is (B): 15 cm