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 he use and why? (b) At what distance in terms of focal length ‘F’ of the lens should he 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?
Answers
a) The student should use a convex lens since it can form real images on the screen.
b) To get magnified image on the screen the candle should be placed between F and 2F of the lens.
c) To get a diminished image on the screen the candle should be placed at a distance greater than 2F from the screen.
Find the images attached below.
The image is clear and will help.
Answer:
between F and 2F
Explanation:
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 he use and why? (b) At what distance in terms of focal length ‘F’ of the lens should he 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?