Home
Class 12
PHYSICS
The temperature across two different sla...


The temperature across two different slabs A and B are shown I the steady state (as shown Fig) The ratio of thermal conductivities of A and B is

A

`2 : 3`

B

`3 : 2`

C

`1 : 1`

D

`5 : 3`

Text Solution

Verified by Experts

The correct Answer is:
B
`(K_(A)A(20))/(3)=(K_(B)A(30))/(3)`
Promotional Banner

Topper's Solved these Questions

  • PROPERTIES OF MATTER

    VMC MODULES ENGLISH|Exercise Level -2|50 Videos

  • PROPERTIES OF MATTER

    VMC MODULES ENGLISH|Exercise JEE Main (Archive) Level - 1|48 Videos

  • PROPERTIES OF MATTER

    VMC MODULES ENGLISH|Exercise JEE Advanced (Archive) Level - 2 (MATRIX MATCH TYPE)|1 Videos

  • MOVING CHARGES & MAGNETISM

    VMC MODULES ENGLISH|Exercise IN-CHAPTER EXERCISE-K|10 Videos

  • QUIZ

    VMC MODULES ENGLISH|Exercise PHYSICS|30 Videos

Similar Questions

Explore conceptually related problems

Two different rods A and B are kept as shown in figure . The variation of temperature of different cross sections with distance is plotted in a graph shown in figure . The ration of thermal conductivities of A and B is -

There are two coils A and B as shown in Fig.

Steady state temperature are shown in the diagram. Find ratio of thermal conductivity k_1/k_2 if length of all rods are same

A partition wall has two layers of different materials A and B in contact with each other. They have the same thickness but the thermal conductivity of layer A is twice that of layer B. At steady state the temperature difference across the layer B is 50 K, then the corresponding difference across the layer A is

Two rods of similar area of cross section and length are joined as shown in the figure. The ratio of their thermal conductivity is 2:3. The free ends are maintained at 100^(@)C and 0^(@)C respectivley. THE temperature at junction in steady state is

Explain the difference between 'steady state' and 'variable state' of a thermal conductor.

Two rods A and B of same length and cross-sectional area are connected in series and a temperature difference of 100^@C is maintained across the combination as shoen in Fig. If the thermal conductivity of the rod A is 3 k and that of rod B is k, Then i.Determine the thermal resistance of each rod. ii. determine the heat current flowing through each rod. iii. determine the heat current flowing through each rod. iv. plot the variation of temperature along the length of the rod.

Wires A and B have have identical lengths and have circular cross-sections. The radius of A is twice the radius of B i.e. R_A = 2R_B . For a given temperature difference between the two ends, both wires conduct heat at the same rate. The relation between the thermal conductivities is given by-

The temperature of the two outer surfaces of a composite slab, consisting of two materials having coefficients of thermal conductivity K and 2K and thickness x and 4x respectively. Temperatures on the opposite faces of composite slab are T_(1) and T_(2) where T_(2)gtT_(1) , as shown in fig. what is the rate of flow of heat through the slab in a steady state?

Three identical rods are joined at point O as shown in the figure. In the steady state, fid the ratio of thermal current through rod AO and OC.

VMC MODULES ENGLISH-PROPERTIES OF MATTER-Level -1
  1. Two sheets of thickness d and 3d, are touching each other. The tempera...

    Text Solution

    |

  2. One end of a conducting rod is maintained a temperature 50^(@)C and at...

    Text Solution

    |

  3. The temperature across two different slabs A and B are shown I the ste...

    Text Solution

    |

  4. Three rods of same dimensions are arranged as shown in figure. They ha...

    Text Solution

    |

  5. Tworods of sane length and material transfer a given amount of heat in...

    Text Solution

    |

  6. Six identical cunducting rods are joined as shown in Fig. Points A and...

    Text Solution

    |

  7. A cold box in the shape of a cube of edge 50 cm is made of ‘thermocol’...

    Text Solution

    |

  8. The only possibility of heat flow in a thermos flask is through its co...

    Text Solution

    |

  9. As shown in Fig. AB is rod of length 30 cm and area of cross section 1...

    Text Solution

    |

  10. Two ends of a conducting rod of varying cross-section are maintained a...

    Text Solution

    |

  11. Three rods A,B and C have the same dimensions Their conductivities are...

    Text Solution

    |

  12. Which of the following combinations of properties would be most desira...

    Text Solution

    |

  13. In a room containing air, heat can go from one place to another mainly...

    Text Solution

    |

  14. The thermal radiation emitted by a body is proportional to T^(n) where...

    Text Solution

    |

  15. The rate of radiation of a black body at 0° C is E . The rate of radia...

    Text Solution

    |

  16. A hot body will radiate maximum energy if its surface is

    Text Solution

    |

  17. Which one of the following is upsilon(m) - T graph for perfectly blac...

    Text Solution

    |

  18. The radiation emitted by a star A is 1000 times that of the sun. If th...

    Text Solution

    |

  19. The power radiated by a black body is P and it radiates maximum energy...

    Text Solution

    |

  20. The temperature of a furnace is 2324^(@)C and the intensity is maximum...

    Text Solution

    |