The focal length of the objective and the eyepiece of a microscope are 4mm and 25 mm respectively. If the final image is formed at infinity and the length of the tube is 16 cm, then the magnifying power of the microscope will be
-327.5
-3.75
3.375
33.75
A
3.375
B
-327.5
C
-3.75
D
33.75
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