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

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

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