Home
Class 12
PHYSICS
Sphere of radius 5 cm at temperatures 12...

Sphere of radius 5 cm at temperatures `127^@C` (Stefan's constant = `5.7 xx 10^(-8) ` S.I. units) . Find the energy.

A

1851 J

B

2749 J

C

2851 J

D

3851 J

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • THERMAL PROPERTIES OF MATTER (HEAT PHENOMENA)

    MBD PUBLICATION|Exercise QUESTION BANK|232 Videos
  • THERMODYNAMICS

    MBD PUBLICATION|Exercise QUESTION BANK|338 Videos

Similar Questions

Explore conceptually related problems

Calculate the energy radiated in two minute by a black body of surface area 400 cm^2 when it is maintained at 127^@C (Stefan's constant sigma = 5.7 xx 10^(-8) J/sm^2k^4 )

Find the value of the gas constant R in S.I. units.

What should be the length of steel abd copper rods at 0^@C so that the difference in their lengths is 5.0 cm at all temperatures. Coefficient of linear expansion of copper is 1.7 xx 10^(-5) //^@ C and that of steel is 1.1 xx 10^(-5) //^@ C .

A 10w electric bulb has tungsten filament of surface area 5 xx 10^(-5) m^2 . What is the temperature of the filament when incandescent ? Emissivity of the filament is 0.35 and Stefan's constant is 5.67 xx 10^(-8) Jm^(-2) s^(-1) k^(-4) .

Two spheres of radii 1 cm and 2 cm have been charged with 1.5 xx 10^(-8)C and 1.5xx10^(-7)C , respectively. If they are connected with a wire, will there be any charge flow? Explain.

The rate constant of a first order reaction is k =7.39 xx 10^(-5) " s"^(-1) . Find the half-life of the reaction.

Two spheres of radii 1cm and 2 cm have been charged with 1.5 xx 10^-8C and 0.3 xx 10^-7C respectively. If they are connected with a wire will there be any charge flow? Explain.

MBD PUBLICATION-THERMAL PROPERTIES OF MATTER (HEAT TRANSFER)-QUESTION BANK
  1. A black body at a temprature of 227^@C radiates heat at the rate of 5 ...

    Text Solution

    |

  2. A baby radiates heat at the rate of 50 J/s when at 300^@K. When the sa...

    Text Solution

    |

  3. Sphere of radius 5 cm at temperatures 127^@C (Stefan's constant = 5.7 ...

    Text Solution

    |

  4. The energy radiated by a 100 kW transmitter in 1 hour is

    Text Solution

    |

  5. The amount of heat radiated pr unit time, per unit area by perfectly b...

    Text Solution

    |

  6. If a body having a surface area 5 cm^2 and a temperature of 727^@C rad...

    Text Solution

    |

  7. If the temperature of the body is increased by 500^@K, the radiation e...

    Text Solution

    |

  8. 10g of ice at 0^@C is mixed thoroughly with 50g of water at 10^@C. The...

    Text Solution

    |

  9. A perfectly black bloody radiates 81j/sec at 300^@K. The amount of ene...

    Text Solution

    |

  10. A rectangular brass plate of sides 15 cm and 8cm and thickness 0.8cm h...

    Text Solution

    |

  11. Total area of glass - planes of the window in a room is 10 m^2 and thi...

    Text Solution

    |

  12. A metal rod 25 cm long and 10sq cm in cross section has it's one end p...

    Text Solution

    |

  13. A wooden ice box contains ice at 0^@ C . The inner dimensions of the b...

    Text Solution

    |

  14. Metal slab is made up of two parallel side plates of metal A and metal...

    Text Solution

    |

  15. A body cols at the rate of 0.5^@C/s when it is at a temperature of 50^...

    Text Solution

    |

  16. A body cools from 80^@C to 70^@C in 5 minutes in surrounding at 35^@C....

    Text Solution

    |

  17. A blackened platinum wire is of length 0.1 m and circumference 2 xx 10...

    Text Solution

    |

  18. Wave length corresponding E(max) for the moon in 14 micron. Estimate t...

    Text Solution

    |

  19. A 10w electric bulb has tungsten filament of surface area 5 xx 10^(-5)...

    Text Solution

    |

  20. The surface temperature of a hot body is 1227^@C. Find the wave length...

    Text Solution

    |