BITSAT 2005 Solved Question Paper

Section: Physics

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Question : 57 of 150

Marks: +1, -0

Which of the following is a wrong statement?

D=
1
f
where f is the focal length and D is called the refractive power of a lens.
Power is expressed in a diopter when f is in metres
Power is expressed in diopter and does not depend on the system of unit used to measure f
D is positive for convergent lens and negative for divergent lens

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