91. ssm A compound microscope has a barrel whose length is 16.0 cm and an eyepiece whose focal length is 1.4 cm. The viewer has a near point located 25 cm from his eyes. What focal length must the objective have so that the angular magnification of the microscope will be - 320?

 

Angular Magnification of a compound Microscope is given by

 

 

So here we get

 

 

 

 

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This page last updated on July 7, 2018