2. Questions Bank
  3. 9th Class
  4. Science
  5. Work and energy

9th Class Science Work and energy Question Bank Work, Energy and Sound

  • question_answer
    What is the work done in lifting a mass of 10 kg at a height of 100 cm?

    A) 90 J                             

    B) 98 J

    C) 96 J                 

    D)        92 J

    E) None of these

    Correct Answer: B

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