The image of a candle flame formed by a lens is obtained on a screen placed on the other side of the lens.
The image is three times the size of the flame and the distance between the lens and the image is 80 cm.
(a) What is the nature of image and the lens used?
(b) At what distance should the candle be placed from the lens?
(c) Obtain the focal length of the lens.
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Answer:
c is the correct answer
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