Home
Class 12
PHYSICS
Assertion: Electron moving perpendicular...

Assertion: Electron moving perpendicular to `vecB` will perform circular motion.
Reason: Force by magnetic field is perpendicular to velocity.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reson are true but reason is not the correct explanation of assertion.

C

if assertion is true but reason is false.

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
B

If `vecF bot vecV` at all instants then motion will be ciruclar.
Promotional Banner

Topper's Solved these Questions

  • AIIMS 2019 25 MAY EVENING SHIFT

    AIIMS PREVIOUS YEAR PAPERS|Exercise PHYSICS|38 Videos
  • AIIMS 2019 26 MAY EVENING SHIFT

    AIIMS PREVIOUS YEAR PAPERS|Exercise PHYSICS|33 Videos

Similar Questions

Explore conceptually related problems

A particle is in uniform circular motion, then its velocity is perpendicular to

Assertion: A metal rod is moved perpendicular to the length of rod and uniform magnetic field exits perpendicular to the plane of motion of rod. Electric field is generated along the length of the rod. Reason: When metallic object moves inside magnetic field then free electrons experience force and are moved in the direction of force. Due to redistribution of electrons, electric field is created in the metal.

Assertion When a charged particle moves perpendicular to a uniform magnetic field then its momentum remains constant. Reason Magnetic force acts perpendicular to the velocity of the particle.

A proton and an electron both moving with the same velocity v enter into a region of magnetic field directed perpendicular to the velocity of the particles. They will now move in cirular orbits such that

Assertion : A charge particle is released particle is released from rest in magnetic field then it will move in circular path. Reason : Work done by magnetic field is non zero.

Velocity is Perpendicular to Magnetic Field |Questions

AIIMS PREVIOUS YEAR PAPERS-AIIMS 2019 25 MAY MORNING SHIFT-PHYSICS
  1. Calculate radiationn powe for sphere whose temperature is 227^(@)C and...

    Text Solution

    |

  2. Determine efficiency of carnot cycle if in adiabatic expansion volume ...

    Text Solution

    |

  3. Amximum amplitude of SHM so block A will not slip on block B, K=100N/m

    Text Solution

    |

  4. The temperature of food material in refrigerator is 4^(@)C and tempera...

    Text Solution

    |

  5. The graph between velocity and position for a damped oscillation will ...

    Text Solution

    |

  6. Assertion: In u(235) fission reaction neutrons are required to be slow...

    Text Solution

    |

  7. Assertion: P v/s (1)/(V) graph is straight line for adiabatic process....

    Text Solution

    |

  8. Assertion: Electron moving perpendicular to vecB will perform circular...

    Text Solution

    |

  9. Assertion: A glass ball is dropped on concrete floor can easily get br...

    Text Solution

    |

  10. Assertion: Distance between posittion of bright and dark fringe remain...

    Text Solution

    |

  11. Assertion:Paramagneic substances get poorly attracted in magnetic fiel...

    Text Solution

    |

  12. Assertion: Heavy water is used to slow down neutron in nuclear reactor...

    Text Solution

    |

  13. Assertion: Collisionn between two billiard's ball are inelastic Reas...

    Text Solution

    |

  14. Assertion: Rayleigh scattering can be considered as elastic collisions...

    Text Solution

    |

  15. Assertion: FM broadcat is better than AM broadcast. Reason: Noice ch...

    Text Solution

    |

  16. Assertion: In adiabatic process work is independent of path. Reason:...

    Text Solution

    |

  17. Assertion: Water drops take spherical shape when falling freely. Rea...

    Text Solution

    |

  18. Assertion: In ionospheric reflection, phase change does not occurs wit...

    Text Solution

    |

  19. Assertion: There is not loss in energy in elastic collision. Reason:...

    Text Solution

    |

  20. Assertion: In both radio actiivity and photoelectric effect electrons ...

    Text Solution

    |