Home
Class 12
PHYSICS
Good conductor of heat and current is :...

Good conductor of heat and current is :

A

a)40 J

B

b)60 J

C

50 J

D

d)Zero

Text Solution

Verified by Experts

The correct Answer is:
D
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

Crystals which are good conductor of heat and electricity are -

A solid X melts slightly above 273 K and is a poor conductor of heat and electricity. To which of the following categories does it belong :

Graphite is good conductor of current but diamond is non-conductor because :

MBD PUBLICATION-THERMAL PROPERTIES OF MATTER (HEAT TRANSFER)-QUESTION BANK
  1. What is the sum of co-efficient of absorption, reflection and transmis...

    Text Solution

    |

  2. The emissivity of black body is equal to

    Text Solution

    |

  3. Good conductor of heat and current is :

    Text Solution

    |

  4. The co-efficient of absorption and reflection of a thin uniform plate ...

    Text Solution

    |

  5. The co-efficient of reflection, coefficient of absorption and coeffici...

    Text Solution

    |

  6. If an athermous body absorbs 20% of the incident radiant energy then r...

    Text Solution

    |

  7. A rate of radiation of a perfectly black body at 0^@ C is X j/sec. Th...

    Text Solution

    |

  8. A spherical black body with a radius of 12 cm radiates 450 W power at ...

    Text Solution

    |

  9. A metal cube of each side 0.05 m long emits 0.6 kcal in 80 second. The...

    Text Solution

    |

  10. A perfectly black body emits total energy of 5 xx 10^2 joules in 50 mi...

    Text Solution

    |

  11. A surface has emissive power 2.4 xx 10^(-2) watt/m^2 and perfectly bla...

    Text Solution

    |

  12. Emissive power of a perfectly black body at 227^@ C is Eb. Emissive po...

    Text Solution

    |

  13. Ratio of rate of radiation of heat of a body at 227^@C to that of the ...

    Text Solution

    |

  14. Compare the rate of radiation of heat of a body at 327^@C with the rat...

    Text Solution

    |

  15. The temperature of a piece of metal is raised from 27^@C to 327^@C. Th...

    Text Solution

    |

  16. Ratio of emissive power of perfectly black

    Text Solution

    |

  17. The temperature of a piece of metal is raised from 27^@C to 84^@C. The...

    Text Solution

    |

  18. A black body at a temprature of 227^@C radiates heat at the rate of 5 ...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |