The objective lens of a microscope has a focal length of 2.4 mm and the eyepiece has an angular magnification of 15. The object is positioned 0.060 mm beyond the focal point of the objective. The
Focal point of the eyepiece is positioned at the real image formed by the objective. The near point
Of the microscope user is at 25 cm. The magnitude of the overall magnification of the microscope is
Closest to
A) 600.
B) 450.
C) 500.
D) 550.
E) 400.

Question

Quizplus · Accepted Answer

The overall magnification of a microscope is given by the product of the magnification of the objective lens and the eyepiece. The magnification of the objective lens is calculated using the formula: M_objective = (L - f_objective) / f_objective, where L is the tube length (distance from the objective to the eyepiece) and f_objective is the focal length of the objective. Given the object is 0.060 mm beyond the focal point, the image distance is approximately the tube length. The eyepiece magnification is given as 15. Calculating these values and multiplying gives a magnification closest to 600.

The Objective Lens of a Microscope Has a Focal Length