Home
Class 11
PHYSICS
Two ends of a conducting rod of varying ...

Two ends of a conducting rod of varying cross-section are maintained at `200^(@)C` and `0^(@)C` respectively. In steady state:

A

temperature difference across AB and CD are equal

B

temperature difference across AB is grater than that of across CD

C

temperature diffeence across AB is less than that of across CD

D

temperature difference may be equal or different depending on the thermal conductivity of the rod

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • COMMUNICATION SYSTEM

    DC PANDEY|Exercise Only One Option is Correct|27 Videos

  • ELASTICITY

    DC PANDEY|Exercise Medical entrances s gallery|21 Videos

Similar Questions

Explore conceptually related problems

The temperature of the two ends A and B of a rod of length 25cm and circular cross section are 100^(@)C and 0^(@)C respectively In the steady state, find the temperature at a point 10cm from the end B (ifnore loss of heat from curved surface of the body) ?

A rod of length L and uniform cross-sectional area has varying thermal conductivity which changes linearly from 2K at end A to K at the other end B . The ends A and B of the rod are maintained at constant temperture 100^(@)C and 0^(@)C , respectively. At steady state, the graph of temperture : T=T(x) where x= distance from end A will be

The ends of copper rod of length 1m and area of cross section 1cm^(2) are maintained at 0^(@)C and 100^(@)C . At the centre of rod, there is a source of heat of 32W . The thermal conductivity of copper is 400W//mK

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

The ends of a copper rod of length 1m and area of cross-section 1cm^2 are maintained at 0^@C and 100^@C . At the centre of the rod there is a source of heat of power 25 W. Calculate the temperature gradient in the two halves of the rod in steady state. Thermal conductivity of copper is 400 Wm^-1 K^-1 .

Cylinder copper rod of length 1m and a cylinder steel rod of length 1.5m are joined together end to end. The cross sectional area of eac rod is 3.14cm . The free ends of steel rod and copper rods are maintained at 0^(@)C and 100^(@)C respectively. The surfaces of rods are thermally insulated. Find the temperature of copper steel junction. (Given thermal conductivity of steel =46J//m-s.^(@)C and the thermal conductivity of copper =386J//m-s.^(@)C )

Assume that the thermal conductivity of copper is twice that of aluminium and four times that of brass. Three metal rods made of copper, aluminium and brass are each 15 cm long and 2 cm in diameter. These rods are placed end to end, with aluminium between the other two. The free ends of the copper and brass rods are maintained at 100^@C and 0^@C respectively. The system is allowed to reach the steady state condition. Assume there is no loss of heat anywhere. When steady state condition is reached everywhere, which of the following statement is true?

Assume that the thermal conductivity of copper is twice that of aluminium and four times that of brass. Three metal rods made of copper, aluminium and brass are each 15 cm long and 2 cm in diameter. These rods are placed end to end, with aluminium between the other two. The free ends of the copper and brass rods are maintained at 100^@C and 0^@C respectively. The system is allowed to reach the steady state condition. Assume there is no loss of heat anywhere. Under steady state condition the equilibrium temperature of the copper aluminium junction will be

In the figure ABC is a conducting rod whose lateral surfaces are insulated. The length of the section AB is one-half of that of BC, and the respective thermal conductivities of the two sections are as given in the figure. If the ends A and C are maintained at 0^(@)C and 70^(@)C respectively, the temperature of junction B in the steady state is

Five rods of same material and same cross-section are joined as shown. Lengths of rods ab, ad and bc are l, 2l and 3l respectively. Ends a and c are maintained at temperatures 200^(@)C and 0^(@)C respectivelly. If x has the value calculated in the above question. Then temperature of junction b or d is

DC PANDEY-CURRENT ELECTRICITY-All Questions
  1. An ideal gas mixture filled inside a balloon expands according to the ...

    Text Solution

    |

  2. Ideal gas is taken through the process shown in the figure :

    Text Solution

    |

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

    Text Solution

    |

  4. The specific heat of many solids at low temperatures varies with absol...

    Text Solution

    |

  5. Show that the volume thermal expansion coefficient for an ideal gas at...

    Text Solution

    |

  6. A uniform solid brass sphere is rotating with angular speed omega0 abo...

    Text Solution

    |

  7. One mole of an ideal gas undergoes a process p=(p(0))/(1+((V(0))/(V))...

    Text Solution

    |

  8. P-V diagram of a diatomic gas is a straight line passing through origi...

    Text Solution

    |

  9. The root mean spuare (rms) speed of hydrogen molecules at a certain te...

    Text Solution

    |

  10. Volume versus temperature graph of two moles of helium gas is as shown...

    Text Solution

    |

  11. Pressure versus temperature graph of an ideal gas is shown in figure. ...

    Text Solution

    |

  12. Two moles of helium are mixed with n moles of hydrogen. The root mean ...

    Text Solution

    |

  13. Pressure P, Volume V and temperature T of a certain material are relat...

    Text Solution

    |

  14. Pressure versus temperature graph of an ideal gas as shown in Fig. C...

    Text Solution

    |

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

    Text Solution

    |

  16. The relation between U, P and V for an iodeal gas is U=2+3PV. What is ...

    Text Solution

    |

  17. The specific heats of argon at constant pressure and constant volume a...

    Text Solution

    |

  18. Temperature of 1 mole of an ideal gas is increased from 300K to 310K u...

    Text Solution

    |

  19. One mole of an ideal monoatomic gas at temperature T0 expands slowly a...

    Text Solution

    |

  20. If the ratio of specific heat of a gas of constant pressure to that at...

    Text Solution

    |