Home
Class 12
PHYSICS
Internal forces can change...

Internal forces can change

A

the linear momentum but not the kinetic energy

B

the kinetic energy but not the linear momentum

C

linear momentum as well as kinetic energy

D

neither the linear momentum nor the kinetic energy.

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • LAWS OF MOTION

    AAKASH SERIES|Exercise EXERCISE - II|136 Videos
  • LAWS OF MOTION

    AAKASH SERIES|Exercise PRACTICE EXERCISE|106 Videos
  • LAWS OF MOTION

    AAKASH SERIES|Exercise Application|6 Videos
  • GEOMETRICAL OPTICS

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (LEVEL-II PRACTICE SHEET (ADVANCED) INTEGER TYPE QUESTIONS)|10 Videos
  • LOGIC GATES

    AAKASH SERIES|Exercise Exercise (Very Short Answer)|10 Videos

Similar Questions

Explore conceptually related problems

Internal forces acting within a system of particles can alter

A : If net force acting-on a system is zero, then work done on the system may be nonzero. R : Internal forces acting on a system can increase its kinetic energy.

The negative of the work done by the conserative internal forces on a system equals the change iln

The negative of the work done by the conserative internal forces on a system equals the change iln

Which of the following forces can cause a change in the potential energy?

S_(1): If the internal forces within a system are conservative, then the work done by the external forces on the system is equal to the change in mechanical energy of the system. S_(2): The potential energy of a particle moving along x- axis in a conservative force field is U=2x^(2)-5x+1 is S.I. units. No other forces are acting on it. It has a stable equalibrium position at one point on x- axis. S_(3) : Internal forces can perform net work on a rigid body. S_(4) : Internal forces can perform net work on a non - rigid body.

Assertion (A): Internal energy change in a cyclic process is zero. Reason (R ) : Internal energy is a state funciton.

Internal energy change during a reversible is isothermal expansion of an ideal is :-

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

To determine the motion of the centre of mass of a system, knowledge of internal forces of the system is required. For this purpose we need not to know the external forces on the system.

AAKASH SERIES-LAWS OF MOTION-EXERCISE - I
  1. A father and his seven year old son are facing each other on ice skate...

    Text Solution

    |

  2. An automobile that is towing a trailer is accelerating on a level road...

    Text Solution

    |

  3. Internal forces can change

    Text Solution

    |

  4. A nucleus moving with velocity bar(v) emits an alpha-particle. Let the...

    Text Solution

    |

  5. A shell is fired from a cannon with a velocity V at an angle theta wit...

    Text Solution

    |

  6. A block moving in air breaks in two parts and the parts separate

    Text Solution

    |

  7. A ball with initial momentum P collides with rigid wall elastically. I...

    Text Solution

    |

  8. A body is projected vertically upwards. Its momentum is gradually decr...

    Text Solution

    |

  9. Assertion: A rocket moves forward by pushing the surrounding air backw...

    Text Solution

    |

  10. A ball falls towards the earth. Which of the following is correct?

    Text Solution

    |

  11. A man is standing in the middle of a perfectly smooth 'island of ice' ...

    Text Solution

    |

  12. A block of weight W is suspended from the mid-point of a rope whose en...

    Text Solution

    |

  13. Figure shows a heavy block kept on a frictionless surface and being pu...

    Text Solution

    |

  14. A body of weight w1 is suspended from the ceiling of a room through a...

    Text Solution

    |

  15. The apparent weight of a body

    Text Solution

    |

  16. The apparent weight of a freely falling body is

    Text Solution

    |

  17. A lift is ascending with a constnat speed V. A passenger in the lift d...

    Text Solution

    |

  18. A block of mass m can slide on a smooth inclined plane of inclination ...

    Text Solution

    |

  19. An elevator is moving vertically upward with an acceleration of g . Th...

    Text Solution

    |

  20. A lift is going up with uniform velocity. When brakes are applied, it...

    Text Solution

    |