Home
Class 12
PHYSICS
A metal bar of length L and area of cros...

A metal bar of length `L` and area of cross-section A is clamped between two rigid supports. For the material of the rod. It Young's modulus is Y and Coefficient if linear expansion is `alpha`. If the temperature of the rod is increased by `Deltat^(@)C`, the force exerted by the rod on the supports is

A

`2π^2YT`

B

`2πr^2YαT`

C

`πr^2YLT`

D

`πr^2YαT`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • TEST 7

    AAKASH INSTITUTE|Exercise Exercise|55 Videos

  • THERMAL PROPERTIES OF MATTER

    AAKASH INSTITUTE|Exercise Assignment (Section-J) Akash Challengers Questions|7 Videos
AAKASH INSTITUTE-TEST 9-EXAMPLE
  1. A system consists of two concentric spherical shells of radii a and b ...

    Text Solution

    |

  2. The ratio of the masses and radii of two planets are 2:3 and 8:27.The ...

    Text Solution

    |

  3. A metal bar of length L and area of cross-section A is clamped between...

    Text Solution

    |

  4. Third overtone of a closed organ pipe is in unison with fourth harmoni...

    Text Solution

    |

  5. A particle is executing S.H.M.if v1 and v2 are the velocities of the p...

    Text Solution

    |

  6. A faulty thermometer has ice point at -5^circC and steam point at 10...

    Text Solution

    |

  7. Tempareture and volume of one mole of an ideal momatomic gas in a proc...

    Text Solution

    |

  8. A verical thin rod is hinged at point P, due to slight push rod starts...

    Text Solution

    |

  9. A physical energy of the dimension of length that can be formula cut o...

    Text Solution

    |

  10. A particle is projected from origin x-axis with velocity V0 such that ...

    Text Solution

    |

  11. A particle is moving on a circle of radius A .At an instant its speed ...

    Text Solution

    |

  12. In a n-p-n transistor 10^(10) electrons enter the emitter in 10^(-6)s....

    Text Solution

    |

  13. For the given logic gate network, the output at Y when A = 1 , B = 1 a...

    Text Solution

    |

  14. The electrical conductivity of a semiconductor increases when electrom...

    Text Solution

    |

  15. A freshly prepared radioactive source of half-life 2 h emits radiation...

    Text Solution

    |

  16. The curve representing the energy spectrum of beta -particles is

    Text Solution

    |

  17. Two identical metal plates show photoelectric effect. Light of wavelen...

    Text Solution

    |

  18. An object is 20 cm away from a concave mirror with focal length 15 cm....

    Text Solution

    |

  19. If epsilon(0) and mu(0) represent the permittivity and permeability o...

    Text Solution

    |

  20. Choose the correct combination for the given graph. (Symbols have th...

    Text Solution

    |