If an object is placed at 10 cm infront of a concave mirror of focal length 15 cm. The magnification of image is
A. -1.5
B. 1.5
C. -3
D. 3
Answer:D
If an object is placed at 10 cm infront of a concave mirror of focal length 15 cm. The magnification of image is
A. -1.5 B. 1.5 C. -3 D. 3