A burning candle whose flame is 1.5 cm tall is placed at a certain distance in front of a convex lens. An image of candle flame is received on a white screen kept behind the lens. The image of flame also measures 1.5 cm. If f is the focal length of convex lens, the candle is placed
(a) at f
(b) between f and 2f
(c) at 2f
(d) beyond 2f
Answers
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5
The image is at 'F' coz the distance of the object is infinite... when the object is kept at infinity the image is formed at focus.
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3
Answer:
the candle is placed at 2f1
Explanation:
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