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Discussion

CBSE Preparation for classes 3rd to 10th
(1)

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The S.I. unit of power of a lens is ________.

 
metre
centimetre
dioptre
None of these

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Ashok Kumar

(iii) dioptre

Meenu

Unit of power of lens is diopter

Meenu

Si unit of power of lens is cm

Chandan Kumar

SI unit of power of a lens is