Question

16. The radius of curvature of a concave mirror is
50cm. An object is kept at 20 cm from mirror then
find position and nature of image of the object.
[Ans. Behind the mirror at 100 cm, five times,
virtual and erect.]​

Answer 1

Explanation:

Given,

Focal length, f=50cm

Magnification, m=2

m= u/v =2

v=2u

From mirror formula,

: f/1

= v/1 + u /1 f/1

= 2u/1 + u/1

u= 2/3f

= 2/3×50

=75 cm

Object Is placed at 75cm from the mirror.

Hope it helps❤️❤️