Home
Class 11
PHYSICS
In a steady state of thermal conduction,...

In a steady state of thermal conduction, temperature of the ends A and B of a 20 cm long rod are `100^(@)C` and `0^(@)C` respectively. What will be the temperature of the rod at a point at a distance of 9 cm from the end A of the rod

A

`60^(@)`C

B

`80^(@)`C

C

`90^(@)`C

D

`10^(@)`C

Text Solution

Verified by Experts

The correct Answer is:
D
From the equation, `theta/x = (Deltat)/(t)`
Given, `t_(1) = 100^(@)`C, l=25 and `pi`=10cm
`theta/10 = (100-0)/(25) rAr theta/10 = 4 rArr theta = 40^(@)`C
Promotional Banner

Topper's Solved these Questions

  • CALORIMETRY AND HEAT TRANSFER

    DC PANDEY ENGLISH|Exercise Match the columns|4 Videos

  • CALORIMETRY & HEAT TRANSFER

    DC PANDEY ENGLISH|Exercise Level 2 Subjective|14 Videos

  • CENTRE OF MASS

    DC PANDEY ENGLISH|Exercise Medical entrances gallery|27 Videos

Similar Questions

Explore conceptually related problems

Twelve conducting rods from the sides of a uniform cube of side l. If in steady state, B and H ends of the cube are at 100^(@)C and 0^(@)C respectively. Find the temperature of the junction 'A' :-

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

Three cylindrical rods A, B and C of equal lengths and equal diameters are joined in series as shown if Fig. Their thermal conductivities are 2K, K and 0.5K, respectively. In steady state, if the free ends of rods A and C are at 100^@C and 0^@C , respectively, calculate the temperature at the two junction points. Assume negligible loss by radiaiotn through the curved surface. What will be the equivalent thermal conductivity?

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

Three rods A, B and C of the same length and same cross-sectional area are joined as shown. Their thermal conductivities are in the ratio 1:2:3/2. If the open ends of A and C are at 200^@ C and 18^@ C, respectively, then the temperature at the junction of A at steady state is

A rod AB is 1m long. The temperature of its one end A is maintained at 100^(@) C and other end B at 10^(@) C, the temperature at a distance of 60 cm from point B is

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 :

Six identical cunducting rods are joined as shown in Fig. Points A and D are maintained at temperatures 200^@C and 20^@C respectively. The temperature of junction B will be

Six identical cunducting rods are joined as shown in Fig. Points A and D are maintained at temperatures 200^@C and 20^@C respectively. The temperature of junction B will be

Six identical cunducting rods are joined as shown in Fig. Points A and D are maintained at temperatures 200^@C and 20^@C respectively. The temperature of junction B will be

DC PANDEY ENGLISH-CALORIMETRY AND HEAT TRANSFER-Medical entrance s gallery
  1. Same quantity of ice is filled in each of the two metal container P an...

    Text Solution

    |

  2. Two identical rods are connected between two containers. One of them i...

    Text Solution

    |

  3. Two rods of length d(1) and d(2) and coefficients of thermal conductiv...

    Text Solution

    |

  4. Certain quantity of water cools from 70^(@)C to 60^(@)C in the first 5...

    Text Solution

    |

  5. A piece of iron is heated in a flame. It first becomes dull red then b...

    Text Solution

    |

  6. In a steady state of thermal conduction, temperature of the ends A and...

    Text Solution

    |

  7. Two bulbs A and B of equal capacity are filled with He and SO(2), resp...

    Text Solution

    |

  8. Hot water kept in a beaker placed in a room cools from 70^(@)C to 60^(...

    Text Solution

    |

  9. In a hydrogen atom, the radius of n^(th) bohr orbit is rn. The graph b...

    Text Solution

    |

  10. A sample of 100 g water is slowly heated from 27^(o)C to 87^(o)C. Calc...

    Text Solution

    |

  11. Water is used in car radiators as coolant because

    Text Solution

    |

  12. A body cools from 60^@C to 50^@C in 10 min. Find its temperature at ...

    Text Solution

    |

  13. If the radius of a star is R and it acts as a black body, what would b...

    Text Solution

    |

  14. Liquid oxygen at 50 K is heated to 300 K at constant pressure of 1 atm...

    Text Solution

    |

  15. The temperature at which a black body of unit area loses its energy at...

    Text Solution

    |

  16. A rod AB is 1m long. The temperature of its one end A is maintained at...

    Text Solution

    |

  17. Two slabs A and B of different materials but of the same thicknesss ar...

    Text Solution

    |

  18. A piece of blue glass heated to a high temperature and a piece of red ...

    Text Solution

    |

  19. The temperature gradient in a rod of 0.5 m length is 80^(@)C//m. It th...

    Text Solution

    |

  20. The thickness of a metallic plate is 0.4 cm. The temperature between i...

    Text Solution

    |