Answer available
Class 10 · Physics · Work, Energy and Power
A body of mass 2 kg is raised through a height of 10 m. Calculate the potential energy gained. Take g = 10 m s−2.
3 marksMediumNumerical
Class 10 · ICSE · Physics
Work, Energy and Power
Work done by a force, kinetic and potential energy, power, and the principle of conservation of energy.
- Questions
- 16
- PYQs
- 0
- Topics
- 2
Syllabus mapping: ICSE syllabus (CISCE)
Topics in this chapter
Narrow to a single topic to practise one idea at a time.
Questions
16 questions in this chapter.
- Answer available
Class 10 · Physics · Work, Energy and Power
Define one kilowatt hour and express it in joules.
2 marksMediumShort answer
- Answer available
Class 10 · Physics · Work, Energy and Power
The SI unit of power is the:
1 markEasyMCQ
- Answer available
Class 10 · Physics · Work, Energy and Power
State the principle of conservation of energy and give one example of its application.
3 marksMediumShort answer
- Answer available
Class 10 · Physics · Work, Energy and Power
A machine does 3000 J of work in 15 s. Calculate its power.
3 marksMediumNumerical
- Answer available
Class 10 · Physics · Work, Energy and Power
A force of 35 N moves a body through 6 m in the direction of the force. Calculate the work done.
2 marksEasyNumerical
- Answer available
Class 10 · Physics · Work, Energy and Power
A coolie carrying a load walks horizontally along a platform. The work done by him against gravity is:
1 markMediumMCQ
- Answer available
Class 10 · Physics · Work, Energy and Power
A ball of mass 0.5 kg is dropped from a height of 20 m. Calculate its kinetic energy just before it strikes the ground and its velocity at that instant. Take g = 10 m s−2 and ignore air resistance.
4 marksHardNumerical
- Answer available
Class 10 · Physics · Work, Energy and Power
A pump raises 500 kg of water through a height of 12 m in 20 s. Calculate the power of the pump. Take g = 10 m s−2.
4 marksHardNumerical
- Answer available
Class 10 · Physics · Work, Energy and Power
A body of mass 5 kg moves with a velocity of 4 m s−1. Calculate its kinetic energy.
3 marksMediumNumerical
- Answer available
Class 10 · Physics · Work, Energy and Power
If the velocity of a body is doubled, its kinetic energy becomes:
1 markMediumMCQ
- Answer available
Class 10 · Physics · Work, Energy and Power
When is the work done by a force zero, even though the force acts on a moving body?
2 marksEasyShort answer