Question

ample Paper
8. Focal length of a concave lens is 10 cm. Where
should a real object be placed in front of it so that
1
an image of magnification is formed?
4
(1) 15 cm
(2) 30 cm
(3) 20 cm
(4) 7.5 cm​

Answer 1

Answer:

(2) 30 cm

Explanation:

object must be placed 30 cm before the lens.

Answer 2

here is the solution....