LENSES

@TATTOO (38)
Botswana
September 1, 2006 9:19am CST
In a compound microscope the objective has a focal length of (+)1cm and the eye piece has a focal length of (+)2cm.An insect is placed at a distance of 1.1cm from the objective.Calculate;(a)the length of the tube of the microscope,and (b) the magnificaion.
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