Question

A concave mirror produces a real image of size 3 times that of the object at a distance of 30cm from the Pole of a mirror. Find the position of the object

Answer 1

Answer:

object distance=u=-30(by sign convention

v=?

height of object= h cm

height of image =3h cm(real image)h=-v/u

m=hi/ho

-3h/h=-v/u

H3=v/u

v=u*3

u=-30

we get v=-30*3

-90 cm

Negative sign indicates that image formed is real and inverted at a distance of 90 cm from mirror