Home
Class 12
PHYSICS
Two containers having boiling water and ...

Two containers having boiling water and ice are connected through a conducting metal rod. The whole ice melts in time T. now the rod is cut into two equal parts and both parts are connected in parallel between the containers the time required to melt the same amount of ice will be

A

`T`

B

`(T)/(2)`

C

`(T)/(4)`

D

`2T`

Text Solution

Verified by Experts

`triangleQ=(kA(100-0))/(L).T` ….(i)
in second case
`triangleQ'(kA(100-0))/(L//2).T'`
Since `triangleQ=triangleQ'`
`thereforeT=4T'`
`T'=(T)/(4)`
Promotional Banner

Topper's Solved these Questions

  • NUCLEAR PHYSICS

    RESONANCE|Exercise Advanced level solutions|16 Videos
  • SEMICONDUCTORS

    RESONANCE|Exercise Exercise 3|88 Videos

Similar Questions

Explore conceptually related problems

An inductance coil have the time constant 4 sec, if it is cut into two equal parts and connected parallel then new time constant of the circuit :-

Assertion : A conducting rod is placed between boiling water and ice. If rod is broken into two equal parts and two parts are connected side by side, then rate of melting of ice will increase ot four times. Reason : Thermal resistance will become four times.

A spring of force constant K is attached with a mass executes with S.H.M has a time period T . It is cut into three equal parts If the springs are connected in parallel then the time period of the combination for the same mass is

A heater boils 1kg water in time t_(1) and another heater bolis the same water in time t_(2) . If both the heater are connected in parallel, the combination will bolt the water in time

A heater coil is rated 100W,200V. It is cut into two identical parts. Both parts are connected together in parallel, to the same sources of 200V. Calculate the energy liberated per second in the new combination.

A heater coil is rated 100W,200V. It is cut into two identical parts. Both parts are connected together in parallel, to the same sources of 200V. Calculate the energy liberated per second in the new combination.

Time period of a block with a spring is T_(0) . Now ,the spring is cut in two parts in the ratio 2 : 3 . Now find the time period of same block with the smaller part of the spring.

The container A is constantly maintained at 100^(@)C and insulated container B in the contains ice at 0^(@)C Different rods are used to connect them For a rod made of copper, it takes 30 mintes for the ice to melt and for a rod of steel of same cross-section taken in different experiment it takes 60 minutes for ice to melt. When these rods are simultaneously connected in parallel, the ice melts is .

Two identical rods are connected between two containers. One of them is at 100^(@)C containing water and another is at 0^(@)C containing ice. If rods are connected in parallel then the rate of melting of ice is q_(1)g//s . If they are connected in series then teh rate is q_(2)g//s . The ratio q_(2)//q_(1) is

RESONANCE-REVISION DPP-All Questions
  1. A steel wire is rigidly fixed along diameter of aluminium ring of radi...

    Text Solution

    |

  2. The temperature of an spherical isolated black body falls from T(1) an...

    Text Solution

    |

  3. Two containers having boiling water and ice are connected through a co...

    Text Solution

    |

  4. A rod of uniform cross-section but non-uniform thermal conductivity wh...

    Text Solution

    |

  5. A vessel is partly filled with a liquid. Coefficients of cubical expan...

    Text Solution

    |

  6. The ends of a rod of uniform thermal conductivity are maintained at di...

    Text Solution

    |

  7. A straight nicrome wire is initially at room temperature 20^(@)C it is...

    Text Solution

    |

  8. When the temperature of a copper coin is raised by 80^@C, its diameter...

    Text Solution

    |

  9. The emissive power of a black body at T=300K is 100Watt//m^(2) conside...

    Text Solution

    |

  10. A solid cube of side a density d and specific heat s is at temperature...

    Text Solution

    |

  11. A sphere P (emissivity=1) of radius 2R and and another sphere Q(emissi...

    Text Solution

    |

  12. Inner surfaec of a cylindrical shell of length l and of material of th...

    Text Solution

    |

  13. Three rods of copper, brass and steel are joined together to form T sh...

    Text Solution

    |

  14. A steel wire is rigidly fixed at both ends its length mass and cross s...

    Text Solution

    |

  15. A body cools in 7 min from 60^@C to 40^@C What will be its temperature...

    Text Solution

    |

  16. As shown in Fig. AB is rod of length 30 cm and area of cross section 1...

    Text Solution

    |

  17. A scale (alpha=10^(-3)//.^(@)C) gives correct reading at 0^(@)C it is ...

    Text Solution

    |

  18. Figure shows in cross section a wall consisting of four layers with th...

    Text Solution

    |

  19. Figure shows in cros section a wall consisting of four layers with the...

    Text Solution

    |

  20. If layer thickness L(2) is 1.4 cm, then its thermal conductivity K(2) ...

    Text Solution

    |