Question

when an object is placed at a distance of 50 cm from a concave mirror an image of the same size as the object is formed.

A) find the radius of curvature and focal length of the mirror​

Answer 1

Explanation:

Focal length of concave mirror is negative.

f=−20cm

u=−50cm

We know that :

f

1

=

v

1

−

u

1

−20

1

=

v

1

−

−50

1

v=−14.3cm.