Question

1
10) A concave lens forms an erect image of 3rd size
ard
3
of the object which is placed at a distance 30 cm
in front of the lens. Find :
(a) the position of image, and
(b) the focal length of the lens.​

Answer 1

Answer:

Given that the concave lens forms an erect image of 1/3rd size of the object. That implies that the magnification provided by the lens is 1/3. The position of the image formed is 10 cm on the same side of the lens where the object is placed.