Quiz  /  Work Power and Energy Class 8 MCQ Questions With Answers

  • 1. 
    What are the factors that can affect the power?

  • Work done and time
  • Work done and velocity
  • Work done and force
  • None of these

  • 2. 
    In comparing of table tennis ball and tennis ball, which ball covered a longer distance once it was placed in a slope?

  • table tennis ball
  • tennis ball
  • same distance
  • All of above

  • 3. 
    When did an object have more kinetic energy?

  • When the time given on an object doubled
  • When the mass of an object doubled
  • When the mass of an object becomes half
  • All of above

  • 4. 
    What are the factors affect gravitational potential energy?

  • Mass and Velocity
  • Mass, Acceleration due to gravity, and Height
  • Mass, Acceleration due to gravity and Time
  • None of these

  • 5. 
    What are the two necessary conditions for work to be done?

  • Force and Velocity
  • Force and Displacement
  • Force and Time
  • None of these

  • 6. 
    What is the unit for work?

  • Joules
  • Newton
  • Watts
  • All of above

  • 7. 
    What will be the formula if we are finding the TIME using the formula of power?

  • Time = work donepowerTime\ =\ \frac{work\ done}{power}Time = powerwork done​
  • Time = powerwork doneTime\ =\ \frac{power}{work\ done}Time = work donepower​
  • Time = work x powerTime\ =\ work\ x\ powerTime = work x power
  • All of above

  • 8. 
    Which of the following statements show kinetic energy?

  • The battery of a lit flashlight
  • A golf ball placed at the edge of the hole
  • A river flowing down a hill
  • Both A & B
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