Home
Class 11
PHYSICS
When work is done on a body by an extern...

When work is done on a body by an external force, its

A

Only kinetic energy increases

B

Only potential energy increases

C

Both kinetic and potential energies may increase

D

Sum of kinetic and potential energies remains constant

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • WORK , ENERGY , POWER AND COLLISION

    ERRORLESS |Exercise Ordinary Thinking (Objective Questions) (Power)|31 Videos

  • WORK , ENERGY , POWER AND COLLISION

    ERRORLESS |Exercise Ordinary Thinking (Objective Questions) (Elastic and Inelastic Collision)|68 Videos

  • WORK , ENERGY , POWER AND COLLISION

    ERRORLESS |Exercise Ordinary Thinking (Objective Questions) (Work Done by Variable Force)|26 Videos

  • WAVES AND SOUND

    ERRORLESS |Exercise SET|25 Videos

  • WORK, ENERGY, POWER & COLLISION

    ERRORLESS |Exercise Assertion|30 Videos

Similar Questions

Explore conceptually related problems

Work is always done on a body when

Is the work required to be done by an external force on an object on a frictionless , horizontal surface to accelerate it from a speed v to a speed 2v

The electric potential at. Point A is 20 V and B is – 20 . The work done by an external force in moving electron slowly from B to A is

If the net work done by external force on a partical is zero which is the following statement about the partical must be true?

The work done by the external forces on a system equals the change in

A force F is exerted on a body of mass M, which is connected to a spring (spring constant k). The body has a constant acceleration a. Calculate the work done by the external force in moving the body by a distance D.

ERRORLESS -WORK , ENERGY , POWER AND COLLISION-Ordinary Thinking (Objective Questions) (Conservation of Energy and Momentum)
  1. The kinetic energy passessed by a body of mass m moving with a velocit...

    Text Solution

    |

  2. If the momentum of a body is increased n times, its kinetic energy inc...

    Text Solution

    |

  3. When work is done on a body by an external force, its

    Text Solution

    |

  4. The bob of a simple pendulum (mass m and length l ) dropped from a hor...

    Text Solution

    |

  5. From a stationary tank of mass 125000 pound a small shell of mass 25 p...

    Text Solution

    |

  6. A bomb of 12 kg explodes into two pieces of masses 4 kg and 8 kg . Th...

    Text Solution

    |

  7. A bullet loses 1//20th of its velocity is passing through a plank. Wh...

    Text Solution

    |

  8. A body of mass 2 kg is thrown up vertically with kinetic energy of 490...

    Text Solution

    |

  9. Two masses of 1 gm and 4 gm are moving with equal kinetic energies. T...

    Text Solution

    |

  10. If the K.E. of a body is increased by 300%, its momentum will increase...

    Text Solution

    |

  11. A light body and a heavy body have same kinetic energy. Which one has ...

    Text Solution

    |

  12. If linear momentum if increased by 50% then kinetic energy will be inc...

    Text Solution

    |

  13. A free body of mass 8 kg is travelling at 2 mater per second in a stra...

    Text Solution

    |

  14. If the K.E. of a particle is doubled, then its momentum will

    Text Solution

    |

  15. If the stone is thrown up vertically and return to ground, its potenti...

    Text Solution

    |

  16. A body of mass 2 kg is projected vertically upward with a velocity of ...

    Text Solution

    |

  17. The energy stored in wound watch spring is

    Text Solution

    |

  18. Two bodies of different masses m(1) and m(2) have equal momenta. Their...

    Text Solution

    |

  19. A car travelling at a speed of 30 km/hour is brought to a halt in 8 m ...

    Text Solution

    |

  20. Tripling the speed of the motor car multiplies the distance needed for...

    Text Solution

    |