Question

of size one-third the size of object. If radius of
curvature of convex mirror is 36 cm, find the
position of object,​

Answer 1

Answer:

It is given that,

Magnification

m=3

m= - v / u

F= R/2 = - 18cm

It is given that a virtual image three times the size of the object is obtained with a concave mirror. So, v=−3u

From mirror’s formula

1 / v + 1 / u = 1/f

-1 / 3u + 1/ u = 1/ - 18

u=−12cm

The distance of the object from the mirror u=12cm in front of concave mirror.

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