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The near vision of an average person is ...

The near vision of an average person is 25 cm To view an object with an angular magnification of 10, what should be the power of the microspcope ?

Text Solution

Verified by Experts

`rArr` For healthy human eye, near point is D = 25 cm
`therefore v = D = 25 cm`
`rArr` Here magnification m= 10
and object distance u = f
Now,
`m = v/u = D/f`
`therefore f = D/m = 25/10 = 2.5 cm `
`therefore =1/f = 1/ (2.5 xx 10^(-2)) = 40 D` (dioptre)
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