Doubling the focal length of the objective lens of a compound microscope will change the magnification by what factor?
A)1/4
B)1/2
C)2
D)4

Question

Doubling the focal length of the objective lens of a compound microscope will change the magnification by what factor?
A)1/4 
B)1/2 
C)2 
D)4

Quizplus · Accepted Answer

According to the microscope formula, magnification equals the focal length of the eyepiece divided by the focal length of the objective lens. Doubling the focal length of the objective lens will result in halving the magnification. Therefore, the magnification factor will change by 1/2.

Doubling the Focal Length of the Objective Lens of a Compound