Home
Class 12
PHYSICS
The insulated spheres of radii R(1) and ...

The insulated spheres of radii `R_(1)` and `R_(2)` having charges `Q_(1)` and `Q_(2)` respectively are connected to each other. There is

A

No change in the energy of the system

B

Always a decrease in the energy

C

An increase in energy of the system

D

A decrease in the energy of the system unless `Q_(1)R_(2)=Q_(2)R_(1)`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • MODEL TEST PAPER 3

    KCET PREVIOUS YEAR PAPERS|Exercise (PHYSICS)|60 Videos
  • MODEL TEST PAPER 5

    KCET PREVIOUS YEAR PAPERS|Exercise Physics|60 Videos

Similar Questions

Explore conceptually related problems

Two small spheres of masses M_(1) and M_(2) are suspended by weightless insulating threads of lengths L_(1) and L_(2) The spheres carry charges Q_(1) and Q_(2) respectively. The spheres are suspended such that they are in level with one another and the threads are inclined to the vertical at angles of theta_(1) and theta_(2) as shown. Which one of the following conditions is essential, if theta_(1)=theta_(2) ?

Two spherical black bodies of radii r_(1) and r_(2) and with surface temperatures T_(1) and T_(2) respectively, radiate the same power. Then r_(1)//r_(2) must be equal to

Two concentric spheres of raddi R and r have positive charges q_(1) and q_(2) with equal surface charge densities. What is the electric potential at their common centre?

The internal and external radii of a hollow hemispherical bowl are r_(1) and r_(2) respectively. The curved surfacea rea of the bowl is

KCET PREVIOUS YEAR PAPERS-MODEL TEST PAPER 4-PHYSICS
  1. 64 small drops of mercury, each of radius r and charge q coalesce to f...

    Text Solution

    |

  2. Five capacitors of 20mu F capacity each are commected to a D.C potenti...

    Text Solution

    |

  3. The insulated spheres of radii R(1) and R(2) having charges Q(1) and Q...

    Text Solution

    |

  4. A particle of mass 2 g and charge 1 muC is held at rest on a frictionl...

    Text Solution

    |

  5. The intensity of a sound wave gets reduced by 20% on passing through a...

    Text Solution

    |

  6. When temperature is increases, the frequency of organ pipe

    Text Solution

    |

  7. The displacement of partcles in a string streched in the x-direction i...

    Text Solution

    |

  8. Two sources of sound are in resonance when

    Text Solution

    |

  9. A transverse wave is described by the equation y= A sin 2 pi (vt - x/l...

    Text Solution

    |

  10. Define the frequency of an Ac.

    Text Solution

    |

  11. A tuning fork of frequency 480 Hz produces 10 beats per second when so...

    Text Solution

    |

  12. A tuning fork of frequency 480 Hz produces 10 beats per second when so...

    Text Solution

    |

  13. The equation of a transverse wave is given by y=20sinpi(0.02x-2t) wher...

    Text Solution

    |

  14. The first diffraction minima due to a single slit diffraction is at th...

    Text Solution

    |

  15. The wavelength of the light of a laser beam can be used as a standard ...

    Text Solution

    |

  16. Polarisation of light proves the -

    Text Solution

    |

  17. An electron microscope is superior to an optical microscope in

    Text Solution

    |

  18. The intensity of illumination at a distances of 5 m from a 200 candela...

    Text Solution

    |

  19. A simple telescope consisting of an objective of focal length 60 cm an...

    Text Solution

    |

  20. Two lenses of power +12 and -2 dioptres are placed in contact. The com...

    Text Solution

    |