Monday, 9 December 2013

Compound ..microscope...a problem..09 dec 13

Following fig shows, a compound microscope , size of object and size of the intermediate image , position of the final image and the focal lengths of the lenses. Using these informations, answer following two questions:



Hint: Since transverse magnification by the objective is easily visible, one can get distance of the intermediate image from the objective using the relation m = 1- v/f. Also since the position of the final image Is at near point, so the distance of the intermediate image from the eye piece should be. f D / ( f + D).

From the fig transverse magnification by objective can be obtained and since the final image is at near point so the angular magnification by the eye piece can easily be known isung the relation 1+ D / f.

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