Work and Energy

The type of energy derived from heated groundwater is:

 
 
 
 

A force is acting on a body, but it causes no displacement. The work done on the body is:

 
 
 
 

A ball weighing 50 N is lifted to a height of 5 meters. The potential energy stored in it is:

 
 
 
 

A box is taken to the second floor of a building by doing some work. This work converts to:

 
 
 
 

A weightlifter of power 1960 W lifts a load of mass ‘M’ from the ground to a height of 2 m in 3 seconds. ‘M’ is:

 
 
 
 

The SI unit of power is:

 
 
 
 

Which one is a renewable energy source?

 
 
 
 

A car, an elephant, and a cricket ball have the same kinetic energy. Which of these will have a greater speed?

 
 
 
 

A ball is thrown downward with an initial velocity, its:

 
 
 
 

A heavy and a lighter object have the same momenta. The object with greater kinetic energy is:

 
 
 
 

A 4 kg body is thrown vertically upward from the ground with a velocity of 5 m/s. If friction is neglected, its kinetic energy just before hitting the ground is:

 
 
 
 

One unit of horsepower is equivalent to:

 
 
 
 

A practical engine cannot have an efficiency equal to or greater than:

 
 
 
 

The unit of work or energy joule (J) is equal to:

 
 
 
 

What is the power utilized when 100 J of work is done in 5s?

 
 
 
 

Question 1 of 15

Related Questions:

  1. Dynamics-1
  2. Dynamics-II
  3. Pressure and Deformation in Solids
  4. Work and Energy
  5. Density and Temperature
  6. Magnetism
  7. What determines the validity of a theory?
  8. Which part of the study is not handled by the classical study of physics?
  9. Discuss the importance of physics in our daily life.
  10. Briefly discuss the importance of physics in other disciplines of science.
  11. Differentiate the terms ‘science’, ‘technology’, and ‘engineering’ with suitable examples.
  12. Explain the terms hypothesis, theory, and law with examples.
  13. Define the scientific method and list its key steps.
  14. Explain why theories are modified over time.
  15. Differentiate between experimental and observational research.
  16. How does physics contribute to technological advancements?
  17. What role does mathematics play in physics?
  18. Describe how scientific laws, theories, and hypotheses are interrelated, with examples.
  19. Explain how physics is used to understand natural phenomena with at least three examples.
  20. What is the neutral zone or field-free region of the magnetic field?