Home
Class 11
PHYSICS
Select the correct alternative(s)....

Select the correct alternative(s).

A

Work done by static friction is always zero

B

Work done by kinetic friction can be positive

C

Kinetic energy of a system can not be increased without applying any external force on the system

D

Work energy theorem is valid in non - intertial frames if we account pseudo force acting on the body in the non - intertial frame

Text Solution

Verified by Experts

The correct Answer is:
B, D
Promotional Banner

Topper's Solved these Questions

  • WORK, ENERGY AND POWER

    PHYSICS GALAXY - ASHISH ARORA|Exercise unsolvedMCQ|78 Videos

  • WORK, ENERGY AND POWER

    PHYSICS GALAXY - ASHISH ARORA|Exercise unsolved|1 Videos

  • WORK, ENERGY AND POWER

    PHYSICS GALAXY - ASHISH ARORA|Exercise Discussion Question|31 Videos

  • RIGID BODIES AND ROTATIONAL MOTION

    PHYSICS GALAXY - ASHISH ARORA|Exercise Unsolved Numerical|63 Videos

Similar Questions

Explore conceptually related problems

Accleration-time graph of a particle executing SHM is as shown in figure. Select the correct alternatives(s).

The count rate of a radioactive sample was 1600 count/s at t=0 and 100 counts at t=8 s . Select the correct alternatives

Select the correct alternatives :

A ball B of mass m is lying at rest on the top surface of a smooth horizontal table 5 m high. Another moovin ball A of same mass make an elastic colision with B slides off the table and strikes the floor at a horizonatal distance of 10 m from the table. Then select the correct alternatives (s). [g=10m//s^(2)]

Select the correct alternatives for an ideal gas :

PHYSICS GALAXY - ASHISH ARORA-WORK, ENERGY AND POWER-MCQ
  1. A ball of mass m is attached to the lower end of a light vertical spri...

    Text Solution

    |

  2. A heavy particle is suspended by a string of length 60 cm from a fixed...

    Text Solution

    |

  3. Work done by the conservative force on a system is equal to :

    Text Solution

    |

  4. Select the correct alternative(s).

    Text Solution

    |

  5. Work done by a force on an object is zero, if

    Text Solution

    |

  6. A particle moves in a straight line with constant acceleration under ...

    Text Solution

    |

  7. Kinetic energy of a particle moving in a straight line is proportional...

    Text Solution

    |

  8. In a projectile motion, power of the gravitational force

    Text Solution

    |

  9. A person applies a constant force vecF on a particle of mass m and fin...

    Text Solution

    |

  10. One end of a light spring of spring constant k is fixed to a wall and ...

    Text Solution

    |

  11. A block of mass 2 kg is hanging over a smooth and light pulley through...

    Text Solution

    |

  12. The spring is compressed by a distance a and released. The block again...

    Text Solution

    |

  13. The potential energy U in joule of a particle of mass 1 kg moving in x...

    Text Solution

    |

  14. A block is suspended by an ideal spring of force constant force F and ...

    Text Solution

    |

  15. For a curved track of radius R, banked at angle theta

    Text Solution

    |

  16. A single conservative force F(x) acts on a particle that moves along t...

    Text Solution

    |

  17. The potential energy of a particle of mass 1 kg in a conservative fiel...

    Text Solution

    |

  18. In the adjacent figure a uniform rod of length L and mass m is kept at...

    Text Solution

    |

  19. Displacement time graph of a particle moving in a straight line is as ...

    Text Solution

    |

  20. A Block 'A' is placed on a smooth horizontal surface and particle C is...

    Text Solution

    |