The SI-related practical unit of power of a lens is
Options
-
A.
Metre
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B.
Dioptre
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C.
Watt
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D.
Pascal
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E.
None of the above
Correct Answer (Detailed Explanation is Below)
B.
Dioptre
Detailed Explanation
The power of a lens is measured in dioptres (D), equal to inverse focal length when focal length is expressed in metres.