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UPSC Physics Work, Energy And Power / कार्य, ऊर्जा एवं शक्ति Question Bank Laws of Motion, Force, Work, Energy and Power, Centre of Mass

  • question_answer
          When a stone tied to a string is whirled in a circle, the work done on it by the string is

    A) positive             

    B)      negative

    C) zero          

    D)      undefined

    Correct Answer: C

    Solution :

    Not Available 


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