An object is placed at a distance 24 cm in front of a convex lens

Light (10)

An object is placed at a distance 24 cm in front of a convex lens of focal length 8 cm.

1. What is the nature of the image so formed?
2. Calculate the distance of the image from the lens.
3. Calculate the magnification of the image.

Answer

(i) Real, inverted diminished

(ii) 1.v - 1/u = 1/f

1/v = 1/8 + 1/(-24)

1/v = 3 - 1/24

v = 24/2 = 12 cm

(iii) m = +v/-u

= 12/-24

= -1/2

= -0.5