Question

A converging mirror forms a real image of height 4 CM of an object height of 1 cm placed 20cm away from the mirror calculate the images distance and what is the focal length of the mirror ​

Answer 1

Answer:

Magnification m=u−v

−4=−20−v

v=−80cm

From mirror formula

v1+u1=f1

−801+−201=f1

f1=−801+4

f=−16cm

Thus focal length of converging mirror is 16 cm.