Questions
A microscope consists of two convex lenses of focal lengths 2.0 cm and 6.25 cm placed 15.0 cm apart. Where must the object be placed so that the final virtual image is at a distance of 25 cm from the eye?
a
2.5 cm
b
2 cm
c
1.5 cm
d
3 cm
detailed solution
Correct option is A
1f=1v-1u ; 16.25=-125-1ue⇒ue=-5 cm L=v0+ue⇒15=v0+5 ; v0=10 cm 12=110-1u0⇒u0=2.5 cmTalk to our academic expert!
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