Home
Class 12
PHYSICS
Find the temperature of junction at B, i...

Find the temperature of junction at B, if each rod has equal area of cross-section.

A

`(380/7)^°`C

B

`(280/5)^°`C

C

`(90/7)^°`C

D

`(50/7)^°`C

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • TEST 4

    AAKASH INSTITUTE ENGLISH|Exercise EXAMPLE|89 Videos
  • TEST2

    AAKASH INSTITUTE ENGLISH|Exercise EXERCISE|2 Videos

Similar Questions

Explore conceptually related problems

An irregular rod of same uniform material as shown in figure is conducting heat at a steady rate. The temperature gradient at various sections versus area of cross section graph will be

Considering a wire of non-uniform cross-section as shown.If the area of cross-section at A is double of the area of cross-section at point B.Ratio of heat energy dissipated in a unit volume per unit time at points A and B is

The two rods show in figure have identical geometrical dimension.. They are in contact with two heat baths at temperature 100^(@)C . And 0^(@)C . The temperature of the junction is 70^(@)C . Find the temperature of the junction if the rods are interchanged.

Two rods of same length and same material having area of cross section A and 4A respectively are joined as shown in the figure. If T_(A) and T_(B) are temperatures of free ends in steady state. The temperature of junction point C is (Assume no heat loss wil take place through lateral surface)

The temperature drop through a two layer furnace wall is 900^@C . Each layer is of equal area of cross section. Which of the following actions will result in lowering the temperature theta of the interface?

Two rods of same dimensions, but made of different materials are joined end to end to end with their free end being maintained at 100^(@)C and 0^(@)C respectively. The temperature of the junction is 70^(@)C . Then the temperature of the junction if the rods are inerchanged will be equal to T^(@)C Find T :

Resistance of a conductor of length l and area of cross-section A is R. If its length is doubled and area of cross-section is halved, then find its new resistance.

Resistance of a conductor of length l and area of cross-section A is R. If its length is doubled and area of cross-section is halved, then find its new resistance.

Figure shows a steel rod joined to a brass rod. Each of the rods has length of 31 cm and area of cross-section 0.20 cm^(2) . The junction is maintained at a constant temperature 50^(@)C and the two ends are maintained at 100^(@)C . The amount of heat taken out from the cold junction in 10 minutes after the steady state is reached in n xx 10^(2)J . Find 'n' the thermal conductivities are K_(steel) = 46 W//m-^(@)C and K_(brass) = 109 W//m-^(@)C .

Two rods P and Q of equal lengths have thermal conductivities K_(1) and K_(2) and cross-sectional areas A_(1) and A_(2) respectively. If the temperature difference across the ends of each rod is the same, then the condition for which the rate of flow of heat through each of them will be equal, is

AAKASH INSTITUTE ENGLISH-TEST 5-EXAMPLE
  1. In heat transfer, which method is based on gravitation?

    Text Solution

    |

  2. The temperature of a body falls from 40^°C to 30^°C in 10 minutes. If ...

    Text Solution

    |

  3. Find the temperature of junction at B, if each rod has equal area of c...

    Text Solution

    |

  4. Two bar of identical dimensions are kept as shown in figure. If K1 and...

    Text Solution

    |

  5. Two gases 1 02' and 'He' expand for same volume difference at constant...

    Text Solution

    |

  6. A gas undergoes a process in which its pressure P and volume V are rel...

    Text Solution

    |

  7. p-V diagram of a diatomic gas is a straight line passing through origi...

    Text Solution

    |

  8. A Carnot engine takes 10^6 cal of heat from a reservoir at 627^°C and ...

    Text Solution

    |

  9. A monoatomic gas is compressed adiabatically to 8/27 of its initial vo...

    Text Solution

    |

  10. A sample of ideal gas (y = 1 .4) is heated at constant pressure. If an...

    Text Solution

    |

  11. If gas expands according to relation P = 4 V, then work done in expans...

    Text Solution

    |

  12. When a process is taken from process abc 100 J of heat is absorbed by ...

    Text Solution

    |

  13. Two moles of an ideal monatomic gas is heated at constant pressure so ...

    Text Solution

    |

  14. Two liquids at different temperature are mixed in a calorimeter of zer...

    Text Solution

    |

  15. Boiling water is changing into steam. Under this condition the specifi...

    Text Solution

    |

  16. A 5 g piece of ice at —20^° C is put into 10 g of water at 30^° C. The...

    Text Solution

    |

  17. When water is heated from O^°C to 10^°C, its density

    Text Solution

    |

  18. A pendulum clock gives correct time at 20^°C. How many seconds will it...

    Text Solution

    |

  19. A uniform iron wire of cross-section area 0.20 xx 10^-6 m^2 is held fi...

    Text Solution

    |

  20. The moment of inertia of a rod about its perpendicular bisector is l, ...

    Text Solution

    |