Home
Class 12
PHYSICS
An electron moves in circular orbit of r...

An electron moves in circular orbit of radius r with constant speed v.The force acting in it is

A

`(mv^2)/r`

B

mvr

C

`(m^2v^2)/r`

D

zero

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • Mock Test 40: PHYSICS

    AAKASH INSTITUTE|Exercise Example|27 Videos
  • MOCK TEST 6

    AAKASH INSTITUTE|Exercise Example|25 Videos
AAKASH INSTITUTE-MOCK TEST 5-Example
  1. At the top of the trajectory of projectile the

    Text Solution

    |

  2. The equations of motion of a projectile are given by x=36tm and 2y=96t...

    Text Solution

    |

  3. An object is projected with a velocity of 20(m)/(s) making an angle of...

    Text Solution

    |

  4. At the topmost point of a trajectory, its velocity and acceleration ar...

    Text Solution

    |

  5. A projectile of a mass m is fired with velocity v from point a as show...

    Text Solution

    |

  6. A ball of mass 2kg is thrown with velocity 10m/s at an angle of 30°to ...

    Text Solution

    |

  7. A projectile is projected from ground such that the maximum height att...

    Text Solution

    |

  8. A ball is projected with the velocity an angle of theta and (90°-theta...

    Text Solution

    |

  9. A particle is projected with velocity of 10m/s at an angle of 15° with...

    Text Solution

    |

  10. A projectile is projected from ground with initial velocity vecu=u(0)h...

    Text Solution

    |

  11. Two balls are projected from two points A and B,x metre apart as shown...

    Text Solution

    |

  12. For an object thrown at 45^(@) to the horizontal, the maximum height H...

    Text Solution

    |

  13. If two projectile of same mass are thrown at an angle of 50° and 40° w...

    Text Solution

    |

  14. Calculate the angular speed of the hour hand of a clock .

    Text Solution

    |

  15. A particle with the constant speed in a circle of radius r and time pe...

    Text Solution

    |

  16. An electron moves in circular orbit of radius r with constant speed v....

    Text Solution

    |

  17. A particle is moving on a circular path of radius 10m with uniform spe...

    Text Solution

    |

  18. A particle is moving along a circular path with uniform speed. Through...

    Text Solution

    |

  19. If a particle moves in a circle describing equal angles in equal inter...

    Text Solution

    |

  20. If a particle is moving on circular path with uniform speed,then which...

    Text Solution

    |