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A pin hole camera of which 1 m is focuss...

A pin hole camera of which 1 m is focussed to an object at a distance 30 m from it. If the height of the object is 3 m, what is the height of the image? ltbgt

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Magnification ` = (h_i)/(h_0) = v/u`
`(h_i)/(3) = 1/30`
`h_i = 3/30 = 1/10`
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