InterviewSolution
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InterviewSolution
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Find the lateral magnification produced by the combination of lenses shown in Figure. |
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Answer» If lenses are placed in contact, the focal length of single equivalent length can be given as `(1)/(f)=(1)/(f_(1))+(1)/(f_(2))=(1)/(10)-(1)/(20)=(1)/(20)` `rArr f=+20` Now using lens formula considering system of lenses as a single lens, we get `(1)/(v)-(1)/(u)=(1)/(f)` `:. (1)/(v)=(1)/(-10)=(1)/(20)` `(1)/(v)=(1)/(20)-(1)/(10)=(-1)/(20)rArrv=-20cm` Now using magnification formula, we get `m=(-20)/(-10)=2` |
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