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the distance of an object placed before a concave mirror is 16cm from one focus and distance of its image 100cm from the focus. find the focal length and the magnification of the mirror.
let f be focal length. 1/(f+16) + 1/(f+100) = 1/f, upon simplifying, we get f2 = 1600. f>0, thus f=40cm magnification = u/v = 56/140 =2/5 =0.4 'Win exciting gifts by answering the questions on Discussion Forum.'
let f be focal length. 1/(f+16) + 1/(f+100) = 1/f, upon simplifying, we get f2 = 1600. f>0, thus f=40cm
magnification = u/v = 56/140 =2/5 =0.4
'Win exciting gifts by answering the questions on Discussion Forum.'
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