Question

If an object is placed at a distance of 20 cm from the pole of a concave mirror, the magnification of
its real image is 3. If the object is moved away from the mirror by 10 cm, the decrease in its image
magnification is
1) 1
2) 1.5
3) 2
4) 2.5
​

Answer 1

Answer:

2.) decrease in magnification will be 1.5