Home
Class 12
PHYSICS
Four rods with different radii r and len...

Four rods with different radii `r` and length `l` are used to connect two reservoirs of heat at different temperatures. Which one will conduct most heat ?

A

r = 2 cm, l = 0.5 m

B

r = 1 cm, l = 0.5 m

C

r = 2 cm, l = 2 m

D

r = 1 cm, l = 1 m

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • NTA JEE MOCK TEST 37

    NTA MOCK TESTS|Exercise PHYSICS|25 Videos
  • NTA JEE MOCK TEST 39

    NTA MOCK TESTS|Exercise PHYSICS|25 Videos
NTA MOCK TESTS-NTA JEE MOCK TEST 38-PHYSICS
  1. In series L-C-R circuit, voltge drop across resistance is 8V, across i...

    Text Solution

    |

  2. A satellite of Sun is in a circular orbit around the Sun, midway betwe...

    Text Solution

    |

  3. Four rods with different radii r and length l are used to connect two ...

    Text Solution

    |

  4. An ideal diatomic gas with C(V)=(5R)/(2) occupies a volume V(1) at a p...

    Text Solution

    |

  5. A current - carrying wire of certain length is bent to form an arc tha...

    Text Solution

    |

  6. With what minimum acceleration can a fireman slide down a rope whose b...

    Text Solution

    |

  7. A raioactive sample contains 2.2 mg of pure .(6)^(11)C which has half-...

    Text Solution

    |

  8. A rod of mass 'M' and length '2L' is suspended at its middle by a wire...

    Text Solution

    |

  9. Lights of two different frequencies whose photons have energies 1 and ...

    Text Solution

    |

  10. Two unequal soap bubbles are formed one on each side of a tube closed ...

    Text Solution

    |

  11. Which one of the following spherical lenses does not exhibit dispersio...

    Text Solution

    |

  12. In the pully system shown, if radii of the bigger and smaller pulley a...

    Text Solution

    |

  13. V("BB") can vary between 0 and 5 V. Find the minimum value of base cur...

    Text Solution

    |

  14. The coefficient of volume expansion of glycerine is 49 xx 10^(-5)//^(@...

    Text Solution

    |

  15. The pressure on a square plate is measured by measuring the force on t...

    Text Solution

    |

  16. Consider two coherent, monochromatic (wavelength lambda) sources S(1) ...

    Text Solution

    |

  17. A thin plastic of refractive index 1.6 is used to cover one of the sli...

    Text Solution

    |

  18. A ball of mass m moving horizontally at a speed v collides with the bo...

    Text Solution

    |

  19. A wire of length L and 3 identical cells of negligible internal resist...

    Text Solution

    |

  20. A helicopter takes off along the vertical with an acceleration a = 3m/...

    Text Solution

    |