Test Index

WBJEE 2012 Physics Solved Paper

© examsnet.com

Question : 37

Total: 40

An object placed in front of a concave mirror at a distance of x cm from the pole gives a 3 times magnified real image. If it is moved to a distance of (x+5) cm, the magnification of the image becomes 2. The focal length of the mirror is

15 cm
20 cm
25 cm
30 cm

Go to Question:

Prev Question

Next Question