A microscope has an eyepiece with a 1.8 cm focal length and a 0.8 cm focal length objective lens. Assuming a relaxed eye, calculate a) the position of the object if the distance between the lenses is 16 cm, and b) the total magnification.

Explanation:

N = Near point of eye = 25 cm

= Focal length of objective = 0.8 cm

= Focal length of eyepiece = 1.8 cm

l = Distance between the lenses = 16 cm

Object distance is given by

= Object distance for objective

From lens equation we have

The position of the object is .

Magnification of eyepiece is

Magnification of objective is

Total magnification is given by

The total magnification is .

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explanation:

newton's first law of motion