Question

The radius of curvature of a concave mirror is 40cm .An object 4cm high is placed at a distance at 30 cm from a concave mirror.find the position of the image​

Answer 1

Explanation:

f = R/2

= 40/2

=20cm

Applying sign convention ,

f = -20cm

Now, 1/v+1/u = 1/v

1/v = -1/60 cm

v = -60cm