Home
Class 12
PHYSICS
Calculate the change which must be place...

Calculate the change which must be placed on a sphere of radius 10 cm in order that the repulsion per square mertre of the surface may just balance the atmospheric pressure which is `1.013xx10^(5)Nm^(-2)`
`["Hint":P=(sigma)/(2epsi_(0))and Q=4pir^(2)sigma]`

Text Solution

Verified by Experts

The correct Answer is:
`1.683xx10^(-4)C`
Promotional Banner

Topper's Solved these Questions

  • GAUSS THEOREM AND ITS APPLICATION

    NN GHOSH|Exercise EXAMPLES(a)|24 Videos

  • GALVANOMETERS: AMMETER AND VOLTMETERS

    NN GHOSH|Exercise Exercise|32 Videos

  • HEATING AND CHEMICAL EFFECT OF CURRENT

    NN GHOSH|Exercise EXAMPLE B|23 Videos

Similar Questions

Explore conceptually related problems

What is the absolute pressure on a swimmer 10 m below the surface of a lake? Take atmospheric pressure 1xx10^(5)N//m^(2)

What is the pressure on a swimmer 10m below the surface of lake? g=10ms^(-2) , atmospheric pressure = 1.01 xx 10^(5)Pa

The kinetic energy per cubic metre of a perfect gas at N.T.P. is (Take atmospheric pressure =1xx10^(5)N//m^(2) )

What change must be placed on a soap bubble of radiuas 1.5 cm if the air pressure has to be the same inside and outside the bubble ? Assume the surface tension to be 27xx10^(-3)""Nm^(-1)

To what potential must a insulated sphere of radius 10 cm be charged so that the surface density of charge is equal of 1 muC//m^ 2 .

Calculate the pressure inside a small air bubble of radius 0.2 mm located just below the surface of water. Take, Surface tension of water =7.2 xx 10^(-2) N//m Atmospheric pressure =1.01 xx 10^(5) N//m^(2)

Find the thrust acting on the human body due to atmospheric pressure. Take the surface area of a man of middle size to be 1.5m^2 and atmospheric pressure (1 atm) =1.013xx10^5 Pa.

What should be the pressure inside a small air bubble of 0.1 mm radius situated just below the water surface? Surface tension of water is 7.2 xx 10^(-2) Nm^(-1) and atmospheric pressure is 1.013 xx 10^(5) Nm^(-2) .

The pressure inside a small air bubble of radius 0.1 mm situated just below the surface of water will be equal to [Take surface tension of water 70xx10^-3Nm^-1 and atmospheric pressure =1.013xx10^5Nm^-2 ]

What should be the pressure inside a small air bubble of 0.1 mm radius situated just below the surface of water? Surface tension of water =72xx10^(-3)N//m and atmospheric pressure =1.013xx10^(5)N//m^(2)

NN GHOSH-GAUSS THEOREM AND ITS APPLICATION-EXAMPLES(a)
  1. Calculate the surface density of change at a place on the earth's sur...

    Text Solution

    |

  2. A spark passes though air when the potential gradient is 3xx10^(6) vol...

    Text Solution

    |

  3. Calculate the change which must be placed on a sphere of radius 10 cm ...

    Text Solution

    |

  4. An infinite changed sheet has 10^(-7) Cm^(-2) surface density of cha...

    Text Solution

    |

  5. An isolated metal sphere whose diameter is 10 cm has a potential of 8...

    Text Solution

    |

  6. What change must be placed on a soap bubble of radiuas 1.5 cm if the ...

    Text Solution

    |

  7. An isolated sphere of radius 5cm is charged to a potential of 159 Kv ...

    Text Solution

    |

  8. A metal plate of radius 20 cm is charged positively to a potential of ...

    Text Solution

    |

  9. Two parallel plates which are 0.2 cm apart are raised to a potential d...

    Text Solution

    |

  10. The sir prssure is the same inside and outside a changed soap bubble o...

    Text Solution

    |

  11. A spsrk passes though air when the potential gradient at the surface ...

    Text Solution

    |

  12. Two concentric sphericl shells of radii a and b (bgt a ) are uniforma...

    Text Solution

    |

  13. Two concentric sphericl shells of radii a and b (bgt a ) are uniforma...

    Text Solution

    |

  14. Calculate the elecric flux though a hemisphere of radius R . The elect...

    Text Solution

    |

  15. Two point charges q and -q are separated by a distance 2l. Find the fl...

    Text Solution

    |

  16. Show by the priciple of superpostion that is a cavity is removed from ...

    Text Solution

    |

  17. A point changes 60nC is placed at the centre of a a thick , inssulated...

    Text Solution

    |

  18. It has been experimentally observed that the electric field in a large...

    Text Solution

    |

  19. There is an infintely long straight wire carrying a charge of liner de...

    Text Solution

    |

  20. Two parallel infinite plates are chaged oppositely with densites +sigm...

    Text Solution

    |