A slide of an onion is placed 12 mm from objective lens of microsope. The focal

Question

A slide of an onion is placed 12 mm from objective lens of microsope. The focal length of objective lens is 10 mm How far frrom lens is image formed? What is magnification of this image The real image formed is located 10.0 mm beneath the eyepiece lens. If the focal length of the eyepiece is 20.0 mm where does the final image appear? What is the final magnification of this compound system

Explanation / Answer

for lens:- 1/v-1/u=1/f =>1/v=1/u+1/f = 1/(-12)+1/10 (Cartesian sign convention) v=60mm magnifying power =0.37037 and final image is at -6.6mm and is virtual and inverted

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