Question

Under what condition a lens become invisible whenplaced in a transparent liquid ?

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Answer 1

: A lens when placed in a transparent liquid becomes invisible when the refractive index of material of lens is equal to the refractive index of liquid , there would be no bending of light when it travels from lens to liquid and both will behave like same entities

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Answer 2

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A lens when placed in a transparent liquid becomes invisible when the refractive index of material of lens is equal to the refractive index of liquid , there would be no bending of light when it travels from lens to liquid and both will behave like same entities.

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