Home
Class 12
PHYSICS
A charge particle 'q' is shot towards an...

A charge particle 'q' is shot towards another charged particle 'Q' which is fixed, with a speed 'v'. It approaches 'Q' upto a closest distance r and then returns. If q were given a speed of '2v' the closest distances of approach would be

A

r

B

2r

C

`r/2`

D

`r/4`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • NTA NEET SET 19

    NTA MOCK TESTS|Exercise PHYSICS|45 Videos
  • NTA NEET SET 24

    NTA MOCK TESTS|Exercise PHYSICS|45 Videos

Similar Questions

Explore conceptually related problems

A charged particle q is shot from a large distance twoards another charged particle Q which is fixed, with speed v. It approaches Q up to as closed distance r and then returns. If q were given a speed 2v, the distasnce of approach would be

A particle of mass m, charge q gt 0 and initial kinetic energy K is projected from infinity towards a heavy nucleus of charge Q assumed to have a fixed position. (a) If the aim is perfect, how close to the centre of the nucleus is the particle when it comes instantaneously to rest ? (b) With a particular imperfect aim, the particle's closest approach to nucleus is twicw the distance determined in (a). Determine speed of particle at the closest distance of approach.

A long straight wire carries a current i. A particle having a positive charge q and mass m, kept at distance x_0 from the wire is projected towards it with speed v. Find the closest distance of approach of charged particle to the wire.

A charged particle of charge 'Q' is held fixed and another charged particle of mass 'm' and charge 'q' (of the same sign) is released from a distance 'r'. The impulse of the force exerted by the external agent on the fixed charge by the time distance between 'Q' and 'q' becomes 2 r is

Q:6DTQ Two particles of mass m and 2m carry a charge q each.Initially the heavier particle is at rest on a smooth horizontal plane and the other is projected along the plane directly towards the first from a distance d with speed u.If the closest distance of approach is (3q^(2)d)/(nq^(2)+4 pi varepsilon_(0)u^(2)d) then find the value of n .

A charge "Q" of mass "m" is at rest on a smooth horizontal plane.Another identical particle is projected with a velocity v towards it from long distance then

Two particles of mass m and 2m carry a charge q each.Initially the heavier particle is at rest on a smooth horizontal plane and the other is projected along the plane directly towards the first from a distance d with speed u .If the closest distance of approach is (3q^(2)d)/(nq^(2)+4 pi e_(0)u^(2)d) then find the value of n .

Figure shows a charge +Q clamped at a point in free space. From a large distance another charge particle of charge -q an.d mass m is thrown toward +Q with an impact parameter d as shown with speed v. Find the distance of closest approach of the two particles.

Two identical particles of mass m carry a charge Q , each. Initially one is at rest on a smooth horizontal plane and the other is projected along the plane directly towards first particle from a large distance with speed v. The closest distance of approach be .

A particle of mass m and charge +q approaches from a very large distance towards a uniformly charged ring ofradius Rand charge, mass same as that of particle, with initial velocity v_(0) along the axis of the ring as shown in the figure-1.420. What is the closest distance of approach between the ring and the particle? Assume the space to be gravity free and frictionless :

NTA MOCK TESTS-NTA NEET SET 23-PHYSICS
  1. In a mixture of gases, the average number of degrees of freedom per mo...

    Text Solution

    |

  2. A particle is vibrating in a simple harmonic motion with an amplitu...

    Text Solution

    |

  3. Weight of a person is 800 N. If he runs 4 m on a vertical ladder in 2s...

    Text Solution

    |

  4. A charge particle 'q' is shot towards another charged particle 'Q' whi...

    Text Solution

    |

  5. A L shaped rod of mass M is free to rotate in a vertical plane about a...

    Text Solution

    |

  6. A nucleus of mass M emits an X-ray photon of frequency n. Energy lost ...

    Text Solution

    |

  7. A body of mass m collides elastically with another body at rest and th...

    Text Solution

    |

  8. A 500 g ball is released from a height of 4m. Each time it makes conta...

    Text Solution

    |

  9. A magnet is suspended horizontal in the earth's magnetic field. When i...

    Text Solution

    |

  10. A zener diode is to be used as a voltage regulator. Identify the corre...

    Text Solution

    |

  11. Depletion layer in the p-n junction consists of

    Text Solution

    |

  12. A block of mass 2 kg is having velocity 4sqrt(5) ms^(-1) in the positi...

    Text Solution

    |

  13. The number of nuclei of two radioactive substance is the same and thei...

    Text Solution

    |

  14. When a certain metallic surface is illuminated with mono chromatic lig...

    Text Solution

    |

  15. Two magnets, each of magnetic moment 'M' are placed so as to form a cr...

    Text Solution

    |

  16. The mean time period of second's pendulum is 2.00 s and mean absolute ...

    Text Solution

    |

  17. The amount of heat (in calories) required to convert 5g of ice at 0^(@...

    Text Solution

    |

  18. A body is heated to a temperature 40^(@)C and kept in a chamber mainta...

    Text Solution

    |

  19. When a source of frequency f(0) moves away from a stationary observer ...

    Text Solution

    |

  20. On heating one end of a rod the temperature of the whole rod will be u...

    Text Solution

    |