Home
Class 11
PHYSICS
An iron bar of length L. Cross section A...

An iron bar of length `L`. Cross section `A` and Young's modulus `Y` is heated from `o^(o)C` to `100^(0)C`. If this bar is held so that it is not permitted to bend and to expand, the force `F` that is develop, is proportional to

A

`l`

B

`sqrt(l)`

C

`l^(0)`

D

`l^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • MECHANICAL PROPERTIES OF SOLIDS

    NARAYNA|Exercise LEVEL-I (C.W)|37 Videos

  • MECHANICAL PROPERTIES OF SOLIDS

    NARAYNA|Exercise LEVEL-II (C.W)|32 Videos

  • MECHANICAL PROPERTIES OF SOLIDS

    NARAYNA|Exercise LEVEL-II (H.W)|24 Videos

  • MECHANICAL PROPERTIES OF FLUIDS

    NARAYNA|Exercise EXERCISE - III|30 Videos

  • MOTION IN A PLANE

    NARAYNA|Exercise Level-II(H.W)|31 Videos

Similar Questions

Explore conceptually related problems

An iron bar of length I and having a cross-section area A is heated from 0^(@) to 100^(@)C . If this bar is so held that it is not permitted to expand or bend, the force that is developed, is

A rod of length l and area of cross-section A is heated from 0^(@)C to 100^(@)C . The rod is so placed that it is not allowed to increase in length, then the force developed is proportional to

A metal rod has length of 100 cm and cross-section of 1.0 cm^(2) . By raising its temperture from 0^(@)C to 100^(@)C and holding it so that it is not permitted to expand or bend, the force developed is (Given Y=10^(12) dyne cm^(-2) and alpha=10^(-5) .^(@)C^(-1) )

An iron bar of length L, cross-section area A and Young's modulus Y is pulled by a force F from both ends so as to produce an elongation l . Which of the following statements is correct?

An iron bar of length l cross section 'A' and young's modulus Y is pulled by a force F from both ends so as to produce an elongation 'e'. Which of the following statements is correct?

A uniform cylindrical rod of length L, cross-section area A and Young's modulus Y is acted upon by the force as shown in Fig. 7(CF).3. The elongation of the rod is

A cord of mass m length L, area of cross section A and Young's modulus y is hanging from a ceiling with the help of a rigid support. The elogation developed in the wire due to its own weight is

A uniform rod of length 2L, area of cross - section A and Young's modulus Y is lying at rest under the action of three forces as shown. Select the correct alternatives.

NARAYNA-MECHANICAL PROPERTIES OF SOLIDS-C.U.Q
  1. If the length of the wire is doubled the strain produced is

    Text Solution

    |

  2. A Copper wire and steel of the same diameter and length are connected...

    Text Solution

    |

  3. An iron bar of length L. Cross section A and Young's modulus Y is heat...

    Text Solution

    |

  4. Three wires A,B,C made of the same material and radius have different ...

    Text Solution

    |

  5. According to Hooke's law of elasticity the ratio of stress too strain

    Text Solution

    |

  6. The law which governs the working of a spring balance is

    Text Solution

    |

  7. A body subjected to strain a number of times does not they Hook's la...

    Text Solution

    |

  8. A heavy mass is attached to a thin wire and is whirled in a vertical c...

    Text Solution

    |

  9. Steel is preferred for making springs over copper because

    Text Solution

    |

  10. Elongation of a wire under its own weight is independent of

    Text Solution

    |

  11. The young's modulus of a wire of length (L) and radius (r ) is Y. If t...

    Text Solution

    |

  12. The dimensional formula for young's modulus is

    Text Solution

    |

  13. The modulus of rigidly of a liquid is

    Text Solution

    |

  14. The young's modulus of air is

    Text Solution

    |

  15. Young's modulus for perfectly plastic body is

    Text Solution

    |

  16. Young's modulus for a perfectly rigid body is

    Text Solution

    |

  17. Within elastic limit, which of the following graphs correctly represen...

    Text Solution

    |

  18. Which of the folliwing substances has the highest elastictiy

    Text Solution

    |

  19. A steel wire is stretched by 5k wt. If the radius of the wire is doub...

    Text Solution

    |

  20. A stone is suspended in a tub of water with copper wire. Another ston...

    Text Solution

    |