Question

a student focused the image of a candle flame on a white screen using a convex lens position of standard screen and the lens are under
Position of candle= 12.0
Position of convex lens= 50.0
Position of screen = 88.0
1) what is the focal length of the convex lens?
2) where will be the image formed if he shifts the candle towards the lens at a position of 31.0 CM.
3) what will be the nature of the image formed if he shifts the candle towards the lens?
4) draw ray diagram to show the formation of image in case 3
please answer it as I have pre board of science tomorrow

Answer 1

A student focused the image of a candle flame on a white screen using a convex lens. He noted down the positions of the candle flame, screen and the lens as given below:

Position of the candle flame = 12.0cm

Position of the lens= 50.0 cm

Position of the screen=88.0 cm

(i) the focal length of the convex lens.

(ii) Find the position of the image of the candle flame if it is shifted towards the lens at a position of 31.0 cm.

(iii) State the nature of the image formed if the candle flame is further shifted towards the lens.

Answer 2

I hope it will help you dear friend......
All the best for your preboard exams......