10 - Science - 15. Physics - Laws Of Motion And Gravitation

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10 - Science - 15. Physics - Laws Of Motion And Gravitation

Prepared By Mr. S. Ravikumar, B. T. Asst. , GHS, Arangaldhurgam, Vellore District.   ; &nbs p; & www. Padasalai. Net


Questions and Answers
  • 1. 
    The acceleration in a body is due to ___________
    • A. 

      Balanced force

    • B. 

      Un-balanced force

    • C. 

      Electro static force

  • 2. 
    The physical quantity which is equal to rate of change of momentum is ___________
    • A. 

      Displacement

    • B. 

      Acceleration

    • C. 

      Force

    • D. 

      Impulse

  • 3. 
    • A. 

      Very large

    • B. 

      Very small

    • C. 

      Zero

    • D. 

      Infinity

  • 4. 
    The weight of 50 kg person at the surface of earth is ________
    • A. 

      50 N

    • B. 

      35 N

    • C. 

      380 N

    • D. 

      490 N

  • 5. 
    The freezing of biotechnology products like vaccines require ________ freezing systems.
    • A. 

      Helium

    • B. 

      Nitrogen

    • C. 

      Ammonia

    • D. 

      Chlorine

  • 6. 
    From the following statements write down that which is not applicable to mass of an object.
    • A. 

      It is a fundamental quantity.

    • B. 

      It is measured using physical balance.

    • C. 

      It is measured using spring balance.

  • 7. 
    Fill in the blanks. Force = mass x acceleration, then momentum = ____x______
    • A. 

      Weight x velocity

    • B. 

      Mass x speed

    • C. 

      Mass x velocity

    • D. 

      Weight x speed

  • 8. 
    Fill in the blanks. Liquid hydrogen is for rocket, then –––– for MRI.
    • A. 

      Liquid ammonia

    • B. 

      Liquid Helium

    • C. 

      Liquid Hydrogen

    • D. 

      Liquid petroleum

  • 9. 
    • A. 

      ISRO

    • B. 

      BARC

    • C. 

      NASA

    • D. 

      ESA

  • 10. 
    As a matter of convention, an anticlockwise moment is taken as ________ and a clockwise moment is taken as  ________.
    • A. 

      Negative, positive

    • B. 

      Positive, negative

    • C. 

      Positive, positive

    • D. 

      Negative, negative