Home
Class 12
PHYSICS
A cylindrical rod having temperature T1 ...

A cylindrical rod having temperature `T_1` and `T_2` at its end. The rate of flow of heat `Q_1` cal/sec. If all the linear dimension are doubled keeping temperature remain const. then rate of flow of heat `Q_2` will be : -

A

`4Q_(1)`

B

`2Q_(1)`

C

`(Q_(1))/(4)`

D

`(Q_(1))/(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • THERMAL PROPERTIES OF MATTER

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (Section-B) Objective Type questions (one option is correct)|15 Videos

  • THERMAL PROPERTIES OF MATTER

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (Section-C) Objective Type questions (More than one option are correct)|12 Videos

  • THERMAL PROPERTIES OF MATTER

    AAKASH INSTITUTE ENGLISH|Exercise Try Youself|16 Videos

  • TEST2

    AAKASH INSTITUTE ENGLISH|Exercise EXERCISE|2 Videos

  • THERMODYNAMICS

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT (SECTION -D) (Assertion - Reason Type Questions)|10 Videos

Similar Questions

Explore conceptually related problems

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

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.

Heat is flowing through two cylindrical rods of the same material. The diamters of the rods are in the ratio 1: 2 and the length in the ratio 2 : 1 . If the temperature difference between the ends is same then ratio of the rate of flow of heat through them will be

The ends of a metal rod are kept at temperatures theta_1 and theta_2 with theta_2gttheta_1 . The rate of flow of heat along the rod is directly proportional to

The two ends of a metal rod are maintained at temperature 100^(@)C and 110^(@)C . The rate of heat flow in the rod is found to be 4.0 J//s . If the ends are maintained at temperature s 200^(@)C and 210^(@)C . The rate of heat flow will be

Heat is flowing through two cylindrical rods of the same material . The diameters of the rods are in the ratio 1:2 and the lengths in the ratio 2:1.If the temperature difference between the ends be the same ,then the ratio of the rate of flow if 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

Two rods of same length and areas of cross section A_1 and A_2 have their ends at same temperature. If K_1 and K_2 are their thermal conductivities, C_1 and C_2 their specific heats and rho_1 and rho_2 are their densities, then the condition that rate of flow of heat is same in both the rods is

The end of two rods of different materials with their thermal conductivities, area of cross-section and lengths all in the ratio 1:2 are maintained at the same temperature difference. If the rate of flow of heat in the first rod is 4 cal//s . Then, in the second rod rate of heat flow in cal//s will be

Rate of heat flow through two conducting rods of identical dimensions having thermal conductivities K_(1) and K_(2) and Q_(1) and Q_(2) when their ends are maintained at the same difference of temperature individually. When the two rods are joined in series with their ends maintained at the same temperature difference (as shown in the figure), the rate of heat flow will be

AAKASH INSTITUTE ENGLISH-THERMAL PROPERTIES OF MATTER-Assignment (Section-A) Objective Type questions (one option is correct)
  1. The dimensions of thermal resistance are

    Text Solution

    |

  2. The temperature of water at the surface of a deep lake is 2^@C. The te...

    Text Solution

    |

  3. A body of length 1 m having cross sectional area 0.75 m^(2) has heat f...

    Text Solution

    |

  4. A cylindrical rod having temperature T1 and T2 at its end. The rate of...

    Text Solution

    |

  5. A slab consists of two parallel layers of two different materials of s...

    Text Solution

    |

  6. The layers of atmosphere are heated through

    Text Solution

    |

  7. The temperarture gradient in a rod of 0.5 m long is 80^(@)Cm^(-1). If ...

    Text Solution

    |

  8. The ratio of the thermal conductivities of two different materials is ...

    Text Solution

    |

  9. Five rods of same dimensions are arranged as shown in figyre. They hav...

    Text Solution

    |

  10. In heat transfer, which method is based on gravitation?

    Text Solution

    |

  11. In which process, the rate of transfer of heat is maximum ?

    Text Solution

    |

  12. Good absorbers of heat are

    Text Solution

    |

  13. A body, which emits radiations of all possible wavelengths, is known a...

    Text Solution

    |

  14. A hot and a cold bofy are kept in vacuum seperated from eavh other. Wh...

    Text Solution

    |

  15. According to ‘Newton’s Law of cooling’, the rate of cooling of a body ...

    Text Solution

    |

  16. A liquid cools down from 70^(@)C to 60^(@)C in 5 minutes. The time tak...

    Text Solution

    |

  17. If a metallic sphere gets cooled from 62^(@)C to 50^(@)C in minutes ...

    Text Solution

    |

  18. Newton's law of cooling is used in laboratory for the determination of...

    Text Solution

    |

  19. It takes 10 minutes to cool a liquid from 61^(@)C to 59^(@)C. If room ...

    Text Solution

    |

  20. A block of metal is heated to a temperature much higher than the room ...

    Text Solution

    |