(a) An object is seen through a simple m...

(a) An object is seen through a simple microscope of focal length `12cm`. Find the angular magnification produced if the image is formed at the near point of the eye which is `25cm` away from it.
(b) A `10D` lens is used as a magnifier. Where shold the object be placed to obtain maximum angular magnification for a nirmal eye (near point `= 25cm)`?

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An object is seen through a simple microscope of focal length 12 cm. Find the angular magnification produced if the image is formed at the near point of the eye which is 25 cm away from it.

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