Optics Question 93

Question: The object distance u, the image distance v and the magnification m in a lens follow certain linear relations. These are

[Roorkee 2000]

Options:

A) 1u versus 1v

B) m versus u

C) u versus v

D) m versus v

Show Answer

Answer:

Correct Answer: A

Solution:

For a lens 1f=1v1u

1v=1u+1f …..(i)

Also m=fvf=1vf

m=(1f) v+1 ….(ii)

On comparing equations (i) and (ii) with y=mx+c.

It is clear that relationship between 1v vs 1u and m vs v is linear.



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