Question

The magnification of a concave mirror is -1.5 whwn the object is placed at a distance of 20cm from the mirror. Find the image distance ?

Answer 1

m=-v/u

-1.5=-v/-20

-v=1.5×20

v=-30cm

Answer 2

Answer:

Explanation:

m=-v/u

-1.5=-v/-20

-v=1.5×20

v=-30cm