The radius of curvature of a mirror (RBSESolutions.com) is 20 cm the focal length is
A. 20 cm
B. 10 cm
C. 40 cm
D. 5 cm
Answer:B
The radius of curvature of a mirror (RBSESolutions.com) is 20 cm the focal length is
A. 20 cm B. 10 cm C. 40 cm D. 5 cm