Home
Class 12
PHYSICS
1000 small spherical drops each of radiu...

1000 small spherical drops each of radius r and carrying charge q coalesce to form one spherical drop. The potential of big drop is large than that of the smaller one by a factor of:

A

1000

B

100

C

10

D

1

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • MOCK TEST-1

    MODERN PUBLICATION|Exercise MCQs|47 Videos
  • MOCK TEST-3

    MODERN PUBLICATION|Exercise MCQs|49 Videos

Similar Questions

Explore conceptually related problems

64 small drops of mercury, each of radius r and charge q coalesce to form a big drop the ratio of the surface density of charge of each small drop with that of the big drop is

A small sphere of radius r_(1) and charge q_(1) is enclosed by a spherical shell of radius r and charge q_(2) Show that if q_(1) is positive, charge will necessarily flow from the sphere to the shell (when the two are connected by a wire) no matter what the charge q_(2) on the shell is.

A spherical drop of capacitance 1 muF is broken into eight drops of equal radius. Then, the capacitance of each small drop is

A spherical shell of radius 10 cm is carrying a charge q . If the electric potential at distances 5cm, 10cm & 15cm from the centre of the spherical shell is V_(1), V_(2) and V_(3) respectively , then

MODERN PUBLICATION-MOCK TEST-2-MCQs
  1. Stationary waves of frequency 200 are formed in air. If velovity of th...

    Text Solution

    |

  2. Radius of curvature of a plano-convex lens of focal length 0.2 m made ...

    Text Solution

    |

  3. 1000 small spherical drops each of radius r and carrying charge q coal...

    Text Solution

    |

  4. A parallel plate condenser of area A has charge Q. Then the force on e...

    Text Solution

    |

  5. A electric motor working on a 100V d.c. supply draws a current of 15A....

    Text Solution

    |

  6. A dip needle free to move in a vertical plane perpendicular to the ma...

    Text Solution

    |

  7. An aeroplane is moving north horizontally with speed of 200 m/s at a p...

    Text Solution

    |

  8. The distance between the object and real image formed by a lens is D. ...

    Text Solution

    |

  9. A full wave rectifier is fed with a.c. mains frequency 50 Hz. What is ...

    Text Solution

    |

  10. A slab consists of two parallel layers of two different materials of s...

    Text Solution

    |

  11. Two discs A and B are mounted coaxially on a vertical axle. The discs ...

    Text Solution

    |

  12. Paragraph-1 : Two discs A and B are mounted coaxially on a vertical ax...

    Text Solution

    |

  13. Paragraph-1 : Two discs A and B are mounted coaxially on a vertical ax...

    Text Solution

    |

  14. Which of the graphs shown below correctly represents the variation of ...

    Text Solution

    |

  15. A point source of light is placed 4m below the surface of a transparen...

    Text Solution

    |

  16. Statement-1 : A block of mass m starts moving on a rough horizontal su...

    Text Solution

    |

  17. Statement I: If the accelerating potential in an X-ray tube is increas...

    Text Solution

    |

  18. Statement-1 : The formula connecting u, v and f for a spherical mirror...

    Text Solution

    |

  19. If a body of mass m moving with velocity v collides with another body ...

    Text Solution

    |

  20. If units of length, mass and force are chosen as fundamental units, th...

    Text Solution

    |