To calculate the magnification of a telescope, we use the formula:
Magnification = focal length of the objective lens / focal length of the eyepiece
Given:
Focal length of the objective lens (F1) = 80 cm
Focal length of the eyepiece (F2) = 2.0 cm
Substituting these values into the formula, we get:
Magnification = 80 cm / 2.0 cm
Magnification = 40x
Therefore, the magnification of the telescope is 40x. Answer choice O40x is correct.
The magnification of a telescope with an objective lens focal length of 80 cm and an eyepiece focal length of 2.0 cm is
O 160x
078x
O40x
082
1 answer