Question

PLEASE GIVE THE ANSWER WITH FULL EXPLANATION -
A student places a candle flame at a distance of about 60 cm from a convex lens of focal length 10 cm and focuses the image of flame on screen . After that he gradually moves the flame towards the lens each time focuses the image on screen.
a) in which direction- towards or away from the lens does he move the screen to focus the image.
b) how does the size of the image change?
c) how does the intensity of the image change as the flame moves towards the lens?
d) approximately for what distance between the frame and the lens the image formed on the screen in inverted and of the same size?

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Answer 1

Hope the pic i attached below helps you!!