A compound microscope consists of an objective lens with focal length 1.0 cm and eye piece of focal length 2.0cm and a tube length 20cm the magnification is
250
100
200
300
A
250
B
100
C
200
D
300
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Solution
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Magnification, of compound microscope m=m0×me=(Lf0×Dfe) Here, L = 20 cm, D = 25 cm (near point), f0 = 1 cm and fe = 2 cm ∴m=201×252 = 250
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