Question

a student focused the image of a candle flame on a white screen using a convex lens he not the position-
position of a candle flame-12 CM, position of lens-50 cm, position of a screen-88 cm.
(1) find the focal length of a convex lens
(2) find the position of the image of a candle flame if it is shifted towards lens at the position of 31 CM
(3) state the nature of image formed if candle flame is further shifted towards lens.

Answer 1

is it of class 10 ???

Answer 2

if it is asked to draw the diagram then draw it by keeping object at focus and img is at infinity .....
c------- if the candle flame is moved further then img will be magnified virtual and erect ....