Question

. You are given a concave mirror of focal length 20 cm and a
candle. Where will you hold the candle to form a virtual,
erect and magnified image of the candle flame ? Draw the
necessary ray diagram.
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Answer 1

Look at the picture... For an erect, magnified and virtual image from a concave mirror, the candle must be placed between pole and the principle focus of concave mirror.

I hope this helps.