Home
Class 12
PHYSICS
Rate of heat flow through a cylindrical ...

Rate of heat flow through a cylindrical rod is `H_(1)`. Temperatures of ends of rod are `T_(1)` and `T_(2)`. If all the dimensions of rod become double and temperature difference remains same and rate of heat flow becomes `H_(2)`. Then `(H_(1))/(H_(2))` is `0.x`. Find value of `x`.

A

`H_(2) = 2H_(1)`

B

`H_(2) = (H_(1))/(2)`

C

`H_(2) = (H_(1))/(4)`

D

`H_(2) = 4H_(1)`

Text Solution

Verified by Experts

The correct Answer is:
a
Promotional Banner

Topper's Solved these Questions

  • GRAVITATION

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise Gravitation|50 Videos

  • LAWS OF MOTION

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise Physics|60 Videos

Similar Questions

Explore conceptually related problems

A cylinderical rod has temperature T_(1) and T_(2) at its ends. The rate of flow of heat is Q^(1) cal/s. if all the linear dimensions are doubled keeping temperature constant then rate of flow of heat Q_(2) will be

A cylindrical rod having temperature T_(1) and T_(2) at its ends. The rate of flow of heat is Q_(1) cal//sec . If all the linear dimensions are doubled keeping temperature constant, then rate of flow of heat Q_(2) will be

The rate of heat flow through a slab is P_("cond") . If the slab thickness is doubled, its cross-sectional area is halved, and the temperature difference across it is doubled, then the rate of heat flow becomes

The heat is flowing through two cylinderical rods of same material. The diameters of the rods are in the ratio 1:2 and their lengths are in the ratio 2:1 . If the temperature difference between their ends is the same, the ratio of rates of flow of heat through them will be

The ratio of the diameters of two metallic rods of the same material is 2 : 1 and their lengths are in the ratio 1 : 4 . If the temperature difference between their ends are equal, the rate of flow of heat in them will be in the ratio

Find the rate of heat flow through a cross section of the rod shown in figure (theta_(2)gttheta_(1) . Thermal conductivity of the material of the rod is K.

1 kcal of heat flowing through a rod of iron.When the rod is cut down to 4 pieces then what will be the heat flowing through each piece having same differential temperature ?

Heat is flowing through two cylindrical rods made of same materials whose ends are maintained at similar temperature. If diameters of the rods are in ratio 1:2 and lengths in ratio 2:1 , then the ratio of thermal current through them in steady state is:

Two rods one is semi circular of thermal conductivity K_(1) and otheir is straight of thermal conductivity K_(2) and of same cross sectional area are joined as shown in the The points A and B are maintained at same temperature difference. If rate of flow of heat is same in two rods then K_(1)//K_(2) is .

Three rods of the same length and the same area of the cross-section are joined. The temperature of two ends one T_(1) and T_(2) as shown in the figure. As we move along the rod the variation of temperature are as shown in the following [Rods are insulated from the surrounding except at the faces]

NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-HEAT AND THERMODYNAMICS-PHYSICS
  1. Wien's law is concerned with

    Text Solution

    |

  2. Which of the following is close to an ideal black body ?

    Text Solution

    |

  3. Rate of heat flow through a cylindrical rod is H(1). Temperatures of e...

    Text Solution

    |

  4. A scientist says that the efficiency of his heat engine which operates...

    Text Solution

    |

  5. A black body has maximum wavelength lambda(m) at temperature 2000 K. I...

    Text Solution

    |

  6. Which one of the following processes depends on gravity ?

    Text Solution

    |

  7. The gases carbon-monoxide (CO) and nitrogen at the same temperature ha...

    Text Solution

    |

  8. An engine takes heat from a reservior and converts its 1//6 part into ...

    Text Solution

    |

  9. The degrees of freedom of a molecule of a triatomic gas are

    Text Solution

    |

  10. An ideal gas at 27^(@)C is compressed adiabatically to 8//27 of its or...

    Text Solution

    |

  11. Coefficient of linear expansion of brass and steel rods are alpha(1) a...

    Text Solution

    |

  12. if 1 g of system is mixed with 1 g of ice, then the resultant temperat...

    Text Solution

    |

  13. The radiant energy from the Sun incident normally at the surface of ea...

    Text Solution

    |

  14. We consider a thermodynamic system. If DeltaU represents the increase ...

    Text Solution

    |

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

    Text Solution

    |

  16. The efficiency of a Carnot engine operating between temperatures of 10...

    Text Solution

    |

  17. A black body is at temperature of 500 K. It emits energy at rate which...

    Text Solution

    |

  18. A sample of gas expands from volume V(1) to V(2). The amount of work d...

    Text Solution

    |

  19. An ideal gas undergoing adiabatic change has the following pressure-te...

    Text Solution

    |

  20. A diatomic gas initially at 18^(@) is compressed adiabatically to one-...

    Text Solution

    |