Question

1. a concave lens has focal length
of 20cm. At what distance (u)
should the object from the lens be
placed so that it forms an image at
10 cm from the lens? Also find the
magnification (m) produced by the
lens.
l= 20, m=0,5
5/5 Marks​

Answer 1

Answer:

1.25 cm

Explanation: