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
ICSE question bank
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16 questions
- 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
- Answer available
Class 10 · Physics · Work, Energy and Power
A boy of mass 40 kg climbs a staircase of 20 steps, each 15 cm high, in 10 s. Calculate the power he develops. Take g = 10 m s−2.
3 marksMediumApplication based
- Answer available
Class 10 · Physics · Work, Energy and Power
A machine raises a load of 200 N through a height of 2.5 m in 5 s. Calculate the power developed.
2 marksMediumNumerical
- Answer available
Class 10 · Physics · Work, Energy and Power
Calculate the work done when a force of 25 N moves a body through 4 m in the direction of the force.
2 marksEasyNumerical
- Answer available
Class 10 · Physics · Work, Energy and Power
A body of mass 5 kg is raised through a vertical height of 8 m. Calculate the gain in its potential energy. (Take g = 10 m s−2)
3 marksMediumNumerical