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Simple Microscope Angular Magnification

If eyepiece l...

Question

If eyepiece lens of a compound microscope is moved a little away from objective lens without changing positions of object and objective lens, then

A

image will not be formed

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B

final image will be real and erect with respect to the object

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C

Observer will see a sharp image

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D

final image will be diminished

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Solution

The correct option is B final image will be real and erect with respect to the object
If eyepiece is moved a little farther than objective, then virtual image,A' formed by objective is formed beyond the focal point of eyepiece. Hence, eyepiece forms a real inverted image,I of A'. Since the image in inverted twice, the final image is real and erect considering O as object.
Real images are obtained on a screen and may not be seen clearly with naked eyes.
At both refractions, magnification occurs and hence final image is also magnified.

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