Find the lateral magnification produced by the combination of lenses shown in Figure.

Explanation

`(1)/(f) = (1)/(f_(1)) + (1)/(f_(2)) = (1)/(10) - (1)/(20) = (1)/(20) rArr f = +20`
`,. (1)/(v) - (1)/(-10) = (1)/(20) rArr (1)/(v) = (1)/(20) - (1)/(10) = (-1)/(20) = -20cm`
`:. M = (-20)/(-10) = 2`