General Science- Lens ( Lens ) Ki Shamta Ka Matrak Hota Hai ?

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Q.10589: लेन्स ( Lens ) की क्षमता का मात्रक होता है ?
A.
B.
C.
D.
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लेन्स ( Lens ) की क्षमता का मात्रक होता है ? General Science in hindi,   Diopter question answers in hindi pdf  Lumen questions in hindi, Know About Opter General Science online test General Science notes in hindi quiz book    lux