what is the distance of B from the mirror?

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Two objects A and B when placed in front of a concave mirror of focal length 7.5cm, give images of equal size. If A is three times the size of B and is placed 30cm from the mirror, what is the distance of B from the mirror?
08
Nov
Two objects A and B when placed in front of a concave mirror of focal length 7.5cm, give images of equal size. If A is three times the size of B and is placed 30cm from the mirror, what is the distance of B from the mirror? give images of equal size. If A is [...]
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