Question

A student wants to project the image of a candle flame on the walls of school laboratory by using a lens:
(a) Which type of lens should be use and why?
(b) At what distance in terms of focal length 'F' of the lens should be place the candle flame so as to get (i) a magnified, and (ii) a diminished image respectively on the wall?
(c) Draw ray diagram to show the formation of the image in each case?

Answer 1

Answer:

he will use a convex lenses

Answer 2

Convex lens

Explanation:

A student wants to project the image of a candle flame on the walls of school laboratory by using a lens:

(a) The student should use a Convex lens to get a real image.

(b) To get magnified image, the student should put the candle flame between f and 2f.

(c) Please refer to the attached pictures for the ray diagrams (i) magnified and (ii) diminished.