Questions
If the focal length of objective and eye lens are 1.2 cm and 3 cm respectively and the object is put 1.25 cm away from the objective lens and the final image is formed a, infinity. The magnifying power of the microscope is
a
150
b
200
c
250
d
400
detailed solution
Correct option is B
m∞=vouo×DfeFrom 1fo=1vo−1uo⇒1+1.2=1vo−1−1.25⇒vo=30cm∴m∞=301.25×253=200Talk to our academic expert!
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