Home
Class 11
PHYSICS
A point source of heat of power P is pla...

A point source of heat of power P is placed at the centre of a spherical shell of mean radius R. The material of the shell has thermal conductivity K. If the temperature difference between the outer and inner surface of the shell in not to exceed T, the thickness of the shell should not be less than .......

A

`(2piR^(2)KT)/(P)`

B

`(4piR^(2)KT)/(P)`

C

`(piR^(2)KT)/(P)`

D

`(piR^(2)KT)/(4P)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • COMMUNICATION SYSTEM

    DC PANDEY|Exercise Only One Option is Correct|27 Videos

  • ELASTICITY

    DC PANDEY|Exercise Medical entrances s gallery|21 Videos

Similar Questions

Explore conceptually related problems

A point source of heat of power P is placed at the centre of a thin spherical shell of a mean radius R. The material of the shell has thermal conductivity K. Calculate the thickness of the shell if the temperature difference between the outer and inner surfaces of the shell in steady - state is T.

A point source of heat is placed at the centre of a spherical shell of mean radius 10 cm. the material of the shell has thermal conductivity 9.5 xx10^(-2) kcal/ m-s^(@)C . Calculate the power of point source of heat, when the temperature difference between the outer and inner surface of the shell is 50^(@)C in steady state. the thickness of shell is 2 cm.

A force F acts at the centre of a thin spherical shell of mass m and radius R. Find the acceleration of the shell if the surface is smooth.

A particel of mass M is placed at the centre of a inform spherical shell of mass 2M and radius R. The gravitational potential on the surface of the shell is

A body of mass m is placed at the centre of the spherical shell of radius R and mass M. The gravitation potential on the surface of the shell is

A particle of mass m is placed at the centre of a unifrom spherical shell of mass 3 m and radius R The gravitational potential on the surface of the shell is .

A ball with charge -50 e is placed at the centre of a hollow spherical shell has a net charge of -50e . What is the charge on the shell's outer surface ?

A point charge +q is placed at the centre of a conducting spherical shell of inner radius a and outer radius b. Find the charge appearing on the inner and outer surface of the shell.

A spherical shell of radius R has a charge +q units. The electric field due to the shell at a point

A point charge q is placed at a distance of r from the centre O of an uncharged spherical shell of inner radius R and outer radius 2R. The electric potential at the centre of the shell will be

DC PANDEY-CURRENT ELECTRICITY-All Questions
  1. A cylinder piston of mass M sides smoothlly inside a long cylinder clo...

    Text Solution

    |

  2. A 1-L flask contains some mercury. It is found that at different tempe...

    Text Solution

    |

  3. A point source of heat of power P is placed at the centre of a spheric...

    Text Solution

    |

  4. A fixed chamber isolated from surrounding is divided into equal halves...

    Text Solution

    |

  5. Figure shows the VT diagram for helium gas in a cyclic process. Find t...

    Text Solution

    |

  6. The state of an ideal gas is changed through an isothermal process at ...

    Text Solution

    |

  7. A solid body X of very large heat capacity is kept in an atmosphere wh...

    Text Solution

    |

  8. A black body emits radiation at the rate P when its temperature is T. ...

    Text Solution

    |

  9. A copper sphere is suspended in an evacuated chamber maintained at 300...

    Text Solution

    |

  10. A vertical cylinder of cross-section area A contains one mole of an id...

    Text Solution

    |

  11. Two spheres A and B have radius but the heat capacity of A is greater ...

    Text Solution

    |

  12. A thermally insulated chamber of volume 2V(0) is divided by a friction...

    Text Solution

    |

  13. In the arrangement shown in Fig. gas is thermally insulated. An ideal ...

    Text Solution

    |

  14. P - V diagram of a cyclic process ABCA is as shown in Fig. Choose the ...

    Text Solution

    |

  15. A gas undergoes change in its state from position A to position B via ...

    Text Solution

    |

  16. Consider the quantity (MkT)/(pV) of an ideal gas where M is the mass o...

    Text Solution

    |

  17. Which of the following quantities is independent of the nature of the ...

    Text Solution

    |

  18. Which of the following quantities depend on temperature only for a giv...

    Text Solution

    |

  19. During the process AB of an ideal gas

    Text Solution

    |

  20. Temperature versus pressure graph of an ideal gas is shown in Fig. Dur...

    Text Solution

    |