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Sample PDF of Std 11th Perfect Physics Notes Book Science ...

Std. XI Sci.: Perfect Physics 2 iii. F.P.S. system: It stands for Foot-Pound-Second system. In this system, length, mass and time are measured in foot, pound and second respectively. iv. S.I. system: It stands for System International. This system has replaced all other systems mentioned above. It has been internationally accepted and

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