Home
Class 11
PHYSICS
A charged particle X moves directly towa...

A charged particle X moves directly towards another charged particle Y. For the X plus Y system, the total momentum is p and the total energy is E.

A

(a) p and E are conserved if both X and Y are free to move.

B

(b) (a) is true only if X and Y have similar charges.

C

(c) If Y is fixed, E is conserved but not P.

D

(d) If Y is fixed, neither E nor P is conserved.

Text Solution

Verified by Experts

The correct Answer is:
A, C
Energy will be conserved whether Y is fixed or free to move because no dissipating force is present. But momentum will be conserved only if Y is free to move, because then external force will be zero.
Promotional Banner

Topper's Solved these Questions

  • WORK, POWER & ENERGY

    CENGAGE PHYSICS|Exercise Linked Comprehension|55 Videos

  • WORK, POWER & ENERGY

    CENGAGE PHYSICS|Exercise Integer|14 Videos

  • WORK, POWER & ENERGY

    CENGAGE PHYSICS|Exercise Single Correct|100 Videos

  • VECTORS

    CENGAGE PHYSICS|Exercise Exercise Multiple Correct|5 Videos

Similar Questions

Explore conceptually related problems

A charged particle moves through a region of uniform magnetic field perpendicularly, Is the momentum of particle affected?

A charged particle moves through a region of uniform magnetic field perpendicularly. Is the momentum of particle affected ?

Two point charges each 50 mu C are fixed on y -axis at y = + 4 m and y = - 4m . Another charged particle having charge -50 mu C and mass 20 g is moving along the positive x -axis. When it is at x = -3 m , its speed is 20 m//sec . Find the speed of charged particle when it reaches to origin. Also , find distance of charged particle from origin , when its kinetic energy becomes zero.

A particle A of mass m and charge Q moves directly towards a fixed particle B , which has charge Q . The speed of A is a v when it is far away from B . The minimum separtion between the particles is not proportional to

A particle executing SHM has a total energy E. Another particle of twice the mass of the first particle executes SHM with 4 times the frequency and twice the amplitude of the first. Its total energy is

A charged particle of mass m and charge q is kept initially at rest on a frictionless surface. Another charged particle of mass 4m and charge 2q starts moving with velocity v towards it. Calculate the distance of the closest approach for both the charged particles.

Two positively charged particles X and Y are initially far away from each other and at rest , X begins to move towards Y with some initial velocity. The total momentum and energy of the system are p and E .

A capacitor is charged by a battery. The battery is removed and another identical uncharged capacitor is connected in parallel. The total electrostatic energy of resulting system:

The charge on a particle Y is double the charge on particle X . These two particles X and Y after being accelerated through the same potential difference enter a region of uniform magnetic field and describe circular paths of radii R_(1) and R_(2) respectively. The ratio of the mass of X to that of Y is

CENGAGE PHYSICS-WORK, POWER & ENERGY-Multiple Correct
  1. Mark the correct statement(s).

    Text Solution

    |

  2. Mark the correct statement(s).

    Text Solution

    |

  3. Select the correct option(s).

    Text Solution

    |

  4. When two blocks connected by a spring move towards each other under mu...

    Text Solution

    |

  5. When a bullet is fired from a gun

    Text Solution

    |

  6. A vehicle is driven along a straight horizontal track by a motor which...

    Text Solution

    |

  7. A block hangs freely from the end of a spring. A boy then slowly pushe...

    Text Solution

    |

  8. A charged particle X moves directly towards another charged particle Y...

    Text Solution

    |

  9. The potential energy varphi, in joule, of a particle of mass 1kg, movi...

    Text Solution

    |

  10. A body of mass M was slowly hauled up a rough hill by a force F which ...

    Text Solution

    |

  11. A block is suspended by an ideal spring of force constant k. If the bl...

    Text Solution

    |

  12. A horizontal plane supports a plank with a block placed on it. A light...

    Text Solution

    |

  13. A particle is projected from a point at an angle with the horizontal a...

    Text Solution

    |

  14. In which of the following cases no work is done by the force?

    Text Solution

    |

  15. A man of mass m is standing on a stationary flat car of mass M. The ca...

    Text Solution

    |

  16. The kinetic energy of a particle continuously icreses with time

    Text Solution

    |

  17. The potential energy curve for interaction between two molecules is sh...

    Text Solution

    |

  18. A particle is taken from point A to point B under the influence of a f...

    Text Solution

    |

  19. Which of the following statements is/are correct about work?

    Text Solution

    |

  20. A body of mass 1kg is taken from infinity to a point P. When the body ...

    Text Solution

    |