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A converging lens of refractive index …

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A converging lens of refractive index 1.5 is kept in a liquid medium having same refractive index.what is the focal length of the lens in this medium ??
  • 1 answers

Gaurav Seth 4 years, 9 months ago

Q : A converging lens of refractive index 1.5 is kept in a liquid medium having same refractive index. What would be the focal length of the lens in this medium?

A n s w e r :

The focal length of lens in a liquid-medium is given by

i.e., focal length of converging lens is infinity i.e., glass lens behaves as a glass plate.

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