Questions
In a compound microscope, the focal lengths of two lenses are 1.5 cm and 6.25 cm. An object is placed at 2 cm from objective and the final image is formed at 25 cm from the eye lens. The distance between the two lenses is (in cm)
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a
6
b
7.75
c
9.25
d
11
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Correct option is D
Length of tube L= v0 + ue=u0f0u0-f0+feDfe+D ; 1f0=1v0-1u0 1fe=1-D-1+ue=2 x 1.52-1.5+6.25 x 256.25+25=11 cmSimilar Questions
Telescopes have larger diameter of objective
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