Questions
A compound microscope has an eye piece of focal length 10 cm and an objective of focal length 4 cm. Calculate the magnification, if an object is kept at a distance of 5 cm from the objective so that final image is formed at the least distance vision (20 cm)
detailed solution
Correct option is A
For objective lens 1fo=1vo−1uo⇒1vo=1fo+1uo=14+1−5=120⇒v0=20cm Now M=vouo1+Dfe=2051+2010=12.Talk to our academic expert!
Similar Questions
The objective lens of a compound microscope produces magnification of 10. In order to get an overall magnification of 100 when image is formed at 25 cm from the eye, the focal length of the eye lens should be
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