The focal lengths of the objective and eye-lens of a microscope are 1 – McqOptions

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1.	The focal lengths of the objective and eye-lens of a microscope are 1 cm and 5 cm respectively. If the magnifying power for the relaxed eye is 45, then the length of the tube is [CPMT 1979]
A.	30 cm
B.	25 cm
C.	15 cm
D.	12 cm
Answer» D. 12 cm

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