Home
Class 11
PHYSICS
The thermal conductivites of copper, mer...

The thermal conductivites of copper, mercury and glass are respectively `K_(C),K_(M)andK_(G)` such that `K_(C)gtK_(M)gtK_(G)`.
If the same quantity of heat flows per second per unit area of each and the corresponding temperature gradients are `X_(C),X_(M)andX_(G)` then

A

`X_(C)=X_(M)=X_(G)`

B

`X_(C)gtX_(M)gtX_(G)`

C

`X_(C)ltX_(M)ltX_(G)`

D

`X_(M)gtX_(C)gtX_(G)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • THERMAL PROPERTIES OF MATTER

    AAKASH SERIES|Exercise EXERCISE-IB|68 Videos

  • THERMAL PROPERTIES OF MATTER

    AAKASH SERIES|Exercise EXERCISE-2|106 Videos

  • THERMAL PROPERTIES OF MATTER

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (LEVEL - II) PRACTICE SHEET (ADVANCED) Integer/Subjective Type Questions|2 Videos

  • SYSTEM OF PARTICLES AND ROTATIONAL MOTION

    AAKASH SERIES|Exercise PRACTICE EXERCISE|99 Videos

  • THERMODYNAMICS

    AAKASH SERIES|Exercise EXERCISE - 3|33 Videos

Similar Questions

Explore conceptually related problems

Two spheres of same material have radii 1 m and 4 m and temperatures 4000 K and 2000 K respectively. The ratio of the energy radiated per second by the first sphere to that by the second is

50 g of copper is heated to increase its temperature by 10^(@) C. If the same quantity of heat is given to 10 gm of water, the rise in temperdture is (specific heat of copper= 420 JKg^(-1) K^(-1) , specific heat of water = 4200 jkg^(-1) k^(-1))

At 100 K the partial pressure of CO_(2) (g ) and CO (g) for the reaction CO_(2)(g) + C(s) hArr 2CO (g ) in a closed vessel at equilibrium are 0.15 and 0.60 bar respectively . The K_(c ) for this reaction at the same temperature is approximately

Two rods of same length and areas of cross-section A_(1) and A_(2) have their ends maintained at same temperature. If K_(1) and K_(2) are their thermal conductivities, c_(1) and c_(2) are the specific heats of their material and rho_(1),rho_(2) their densities, then for the rate of flow by conduction through them to be equal

The thermal capacity of 10g of a substance is 8 calories/ ""^(0) C. The specific heat is in J/kg-K

The thermal capacity of 10g of a substance is 8 "calories"//""^(@)C . The specific heat is in J/Kg-K

A copper rod of length 75 cm and an iron rod of length 125cm are joined together end to end . Both are of circular cross section with diameter 2 cm . The free ends of the copper and iron are maintained at 100^@C and 0^@C respectively . The surface of the bars are insulated thermally . The temperature of the copper -iron junction is [Thermal conductivity of the copper is 386.4 W//m-K and that of iron is 48.46W//m-K ].

At certain temperature K_(c) for the reactioni. SO_(2)(g)+NO_(2)(g)hArrSO_(3)(g)+NO(g) is 16. If initiallyone mole each of all the four gases are taken in one litre vessel, what are the equilibrium concentrations of NO and NO_(2) ?

AAKASH SERIES-THERMAL PROPERTIES OF MATTER-EXERCISE-IA
  1. The gas constant for a molecule is (terms have usual meaning) a) K ...

    Text Solution

    |

  2. The units of universal gas constant is a) Jmol^(-1)K^(-1) b) Jkg^(...

    Text Solution

    |

  3. A) Generally solids are better conductors than liquids B) Liquids ar...

    Text Solution

    |

  4. Water is taken in a metal container and is heated at its bottom. The a...

    Text Solution

    |

  5. For a good cooking vessel, the necessary characterstics are a) Large...

    Text Solution

    |

  6. A) Heat transfer by conduction & convection require a material medium ...

    Text Solution

    |

  7. A) A body of low Thermal capacity gets heated or cooled quickly B) G...

    Text Solution

    |

  8. Two identical conductors made of metals of coefficients of thermal con...

    Text Solution

    |

  9. A) A hot hollow sphere in vacuum cools by convection B) A hot solid ...

    Text Solution

    |

  10. A) Natural convection can take place in gravity free region B) Force...

    Text Solution

    |

  11. In a common room heating system, Statement (A): Hot water is circula...

    Text Solution

    |

  12. A) Polished surface is a poor absorber but good reflector B) Rough ...

    Text Solution

    |

  13. A spherical black body is of radius 'r'. Its radiating power is 'P' an...

    Text Solution

    |

  14. Statement (A) : Water can be boiled in a thin paper box without even c...

    Text Solution

    |

  15. A piece of charcoal and a piece of shining steel of the same area are ...

    Text Solution

    |

  16. A glass full of hot milk is poured on the table. It begins to cool gra...

    Text Solution

    |

  17. A glass full of hot milk is poured on the table. It begins to cool gra...

    Text Solution

    |

  18. In Newton's law of cooling, if the rates of emission of radiation by a...

    Text Solution

    |

  19. In which one of the following cases does the thermal conductivity incr...

    Text Solution

    |

  20. The thermal conductivites of copper, mercury and glass are respectivel...

    Text Solution

    |