A person wants a real image of his own, 3 times enlarged. Where should be stand infront of a concave mirror of radius of curvature 30 cm ?

A person wants a real image of his own, 3 times enlarged. Where should

1.	A person wants a real image of his own, 3 times enlarged. Where should be stand infront of a concave mirror of radius of curvature 30 cm ?
Answer» 30 cm 20 cm 10 cm 90 cm Solution :(b) `(1)/(v) + (1)/(U) = (1)/(f)` `(1)/(3u) + (1)/(u) = (-1)/(15)` `(1)/(u) ((4)/(3)) = (-1)/(15)` `60 = - 3u rArr u = - 20 cm`.

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A person wants a real image of his own, 3 times enlarged. Where should be stand infront of a concave mirror of radius of curvature 30 cm ?

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