A candle flame 2 cm high is palced at distance of 2 metere from a wall. How far from the wall must a concave mirror to placed in order to form an imag
A candle flame 2 cm high is palced at distance of 2 metere from a wall. How far from the wall must a concave mirror to placed in order to form an images of the flame 6 cm high on the wall ?
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