Question

aconcave mirror produces three times magnified real image of an object is placed 20 cm where is mage located​

Answer 1

Given magnification m=3

and object distance u=20 cm and we know,

Magnification m= -v/u

3= -v/20

-v= 3×(-20)

v = 60cm

Thus, the image is formed in distance of 60cm.