Home
Class 11
PHYSICS
A heat flux of 4000 J/s is to be passed ...

A heat flux of 4000 J/s is to be passed through a copper rod of length 10 cm and area of cross section `100cm^2`. The thermal conductivity of copper is `400W//m//^(@)C` The two ends of this rod must be kept at a temperature difference of

A

`1^(@)C`

B

`10^(@)C`

C

`100^(@)C`

D

`1000^(@)C`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • TRANSMISSION OF HEAT

    ERRORLESS |Exercise Convection|13 Videos
  • TRANSMISSION OF HEAT

    ERRORLESS |Exercise Radiation (General, Kirchoff s law, Black body)|38 Videos
  • THERMOMETRY, THERMAL EXPANSION AND CALORIMETRY

    ERRORLESS |Exercise Self Evaluation Test|15 Videos
  • UNITS, DIMENSION & MEASUREMENTS

    ERRORLESS |Exercise All Questions|333 Videos

Similar Questions

Explore conceptually related problems

Calculate the thermal resistance of an aluminium rod of length 20cm and area of cross-section 4cm^(2) . The thermal conductivity of aluminium is 210Js^(-1)m^(-1)K^(-1) .

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

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 .

Figure shows an aluminium rod joined to a copper rod. Each of the rods has a length of 20cm and area of ccross section 0.20cm^(2) . The junction is maintained at a constant temperature 40^(@)C and the two ends are maintained at 80^(@)C . Calculate the amount of heat taken out from the cold junction in one minute after the steady state is reached. The conductivities are K_(Al)=200Wm^(-1) ^(@)C^(-1) . and K_(Cu)=400Wm^(-1) ^(@)C^(-1) .

As shown in Fig. AB is rod of length 30 cm and area of cross section 1.0 cm^2 and thermal conductivity 336 SI units. The ends A and B are maintained at temperatures 20^@C and 40^@C , respectively .A point C of this rod is connected to a box D, containing ice at 0^@C through a highly conducting wire of negligible heat capacity. The rate at which ice melts in the box is (assume latent heat of fusion for ice L_f=80 cal//g )

One end of a metal rod of length 1.0 m and area of cross section 100 cm^(2) is maintained at . 100^(@)C . If the other end of the rod is maintained at 0^(@)C , the quantity of heat transmitted through the rod per minute is (Coefficient of thermal conductivity of material of rod = 100 W//m-K )

Heat is flowing through a rod of length 25.0 cm having cross-sectional area 8.80 cm^(2) . The coefficient of thermal conductivity for the material of the rod is K = 9.2 xx 10^(-2) kcal s^(-1) m^(-1) .^(@)C^(-1) . The Temperatures of the ends of the rod are 125^(@)C and 0^(@)C in the steady state. Calculate (i) temeprature gradient in the rod (ii) temperature of a point at a distance of 10.0 cm from the hot end and (iii) rate of flow of heat.

One end of a copper rod of length 1 m and area of cross - section 400 xx (10^-4) m^2 is maintained at 100^@C . At the other end of the rod ice is kept at 0^@C . Neglecting the loss of heat from the surrounding, find the mass of ice melted in 1h. Given, K_(Cu) = 401 W//m-K and L_f = 3.35 xx (10^5) J//kg.

ERRORLESS -TRANSMISSION OF HEAT-ET Self Evaluation Test
  1. A heat flux of 4000 J/s is to be passed through a copper rod of length...

    Text Solution

    |

  2. A rod of 40 cm in length and temperature difference of 80^(@)C at its ...

    Text Solution

    |

  3. Two vessels of different materials are similar in size in every respec...

    Text Solution

    |

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

    Text Solution

    |

  5. Four rods of silver, copper, brass and wood are of same shape. They ar...

    Text Solution

    |

  6. The two opposite faces of a cubical piece of iron (thermal conductivit...

    Text Solution

    |

  7. Wein's constant is 2892xx10^(-6) MKS unit and the value of lambda(m) f...

    Text Solution

    |

  8. If at temperature T(1) = 1000 K the wavelength is 1.4 xx 10^(-6)m then...

    Text Solution

    |

  9. The wavelength of maximum intensity of radiation emitted by a star is ...

    Text Solution

    |

  10. Two friends A and B are waiting for another friend for tea. A took the...

    Text Solution

    |

  11. There are two spherical balls A and B of the same material with same s...

    Text Solution

    |

  12. Five identical rods are joined as shown in figure. Point A and C are ...

    Text Solution

    |

  13. We cannot boil water inside the earth's satellite. Explain.

    Text Solution

    |

  14. In the following figure, two insulating sheets with thermal resistance...

    Text Solution

    |

  15. The top of an insulated cylindrical container is covered by a disc hav...

    Text Solution

    |

  16. Figure. Shows two air filled bulbs connected by a U-tube partly filled...

    Text Solution

    |

  17. Two conducting rods A and B of same length and cross-sectional area ar...

    Text Solution

    |

  18. The area of the glass of a window of a room is 10 m^(2) and thickness ...

    Text Solution

    |

  19. The spectrum from a black body radiation is a

    Text Solution

    |

  20. The Wien’s displacement law express relation between

    Text Solution

    |

  21. A black body is heated from 27^(@)C to 127^(@)C. The ratio of their en...

    Text Solution

    |