A rod of length 10 cm lies along the principal axis of a concave mirror of focal length 10 cm in such a way that its end closer to the pole is 20 cm away from the mirror. The length of the image is,
A. 2.5 cm
B. 5 cm
C. 10 cm
D. 15 cm
Answer:B
A rod of length 10 cm lies along the principal axis of a concave mirror of focal length 10 cm in such a way that its end closer to the pole is 20 cm away from the mirror. The length of the image is,
A. 2.5 cm B. 5 cm C. 10 cm D. 15 cm