Home
Class 12
PHYSICS
A wire of cross sectional area 3mm^(2) i...

A wire of cross sectional area `3mm^(2)` is just stretched between two fixed points at a temperature of `20^(@)` . Determine the tension when the temperature falls to `20^(@)`C . Coefficient of linear of expansion `alpha = 10^(-5)//"^(@)C` and Y = ` 2 xx 10^(11)N//m^(2)`.

A

120KN

B

20 N

C

120 N

D

102 N

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

A wire of cross-sectional area 3 mm^(2) is first stretched between two fixed points at a temperature of 20^(@)C . Determine the tension when the temperature falls to 10^(@)C Coefficient of linear expansion alpha=10^(-5).^(@)C^(-1) and Y =2 xx10^(11) N//m^(2)

A wire of cross sectional area 3 mm^(2) is just stretched between two fixed points at a temperature of 20^(@)C . Then the tension in the wire when the temperature falls to 10^(@)C is, (alpha =1.2 xx 10^(-5) //""^(@)C, Y=2xx10^(11) N//m^(2))

A steel wire 2mm in diameteris ust streched between two dixed point at a temperature of 20^(@)C . Determine its tension when its temperature falls to 10^(@)C . Linear expansivity of steel =11 xx 10^(-6)//K, Young modulus =2 xx 10^(11)//m^(-2)

A tungsten wire, 0.5mm in diameter, is just strechted between two fixed points at a temperture of 40^(@)C . Determine the tension in the wire when the temperature falls to 20^(@)C . (coefficant of linear expansion of tungsten = 4.5xx10^(-6)//.^(0)C, Young's modulus of tungsten = 3.4xx10^(10) Nm^(-2))

A steel wire 2 mm is diameter is just stretched between two fixed points at a temperature of 20^(@)C . If the temperature falls to 10^(@)C , then the tension in the wire is (Coefficient of linear expansion of steel (alpha) is 11xx10^(-6)//""^(@)C and Y_(s)=2.1xx10^(11)N//m^(2) )

A steel wire 2 mm in diameter is just stretched between two fixed points at a temperature of 20^(@)C. If the temperature falls to 10^(@)C, then the tension in the wire is (The coefficient of linear expansion of steel = 11xx10^(-6)//^(@)C and Y for steel 2.1 xx10^(11)N//m^(2))

A stell wire of cross-sectional area 0.5mm^2 is held between teo fixed supports. If the wire is just taut at 20^C , determine the tension when the temperature falls to 0^C . Coefficient of linear expansion of steel is 1.2 xx 10^(-5) 0^C(-1) and its Young's modulus is 2.0 xx 10^11 N m^(-2).

A steel wire of length 20 cm and uniform cross-sectional 1 mm^(2) is tied rigidly at both the ends. The temperature of the wire is altered from 40^(@)C to 20^(@)C . Coefficient of linear expansion of steel is alpha = 1.1 xx 10^(-5) .^(@)C^(-1) and Y for steel is 2.0 xx 10^(11) Nm^(2) , the tension in the wire is

A steel wire 2mm in diameter is stretched between two clamps, when its temperature is 40^@C Calculate the tension in the wire, when its temperature falls to 30^@C Given, coefficient Y for steel = 21 xx 10^(11) dyn e//cm^2

A steel wire of uniform cross-sectional area 2mm^(2) is heated upto 50^(@) and clamped rigidly at two ends . If the temperature of wire falls to 30^(@) then change in tension in the wire will be , if coefficient of linear expansion of steel is 1.1 xx 10^(-5)//"^(@)C and young's modulus of elasticity of steel is 2 xx 10^(11) N//m^(2)

DISHA-MECHANICAL PROPERTIES OF FLUIDS-Physics
  1. A 4.0 m long copper wire of cross sectional area 1.2 cm^(2) is stretch...

    Text Solution

    |

  2. A copper rod 2m long is stretched by 1mm. Strain will be -

    Text Solution

    |

  3. A wire of cross sectional area 3mm^(2) is just stretched between two f...

    Text Solution

    |

  4. The compressibility of water is 5 xx 10^(-10) m^(2)//N . If it is sub...

    Text Solution

    |

  5. The Young’s modulus of steel is 2 × 10^(11) N//m^(2) and its coefficie...

    Text Solution

    |

  6. For a given material the Young's modulus is 2.4 times that of its ri...

    Text Solution

    |

  7. A wire of length 1m is stretched by a force of 10N. The area of cross-...

    Text Solution

    |

  8. A stress of 1kg//mm^(2) is applied on a wire. If the modulus of elasti...

    Text Solution

    |

  9. A metallic wire is suspended by suspending weight to it. If S is longi...

    Text Solution

    |

  10. The lengths and radii of two wires of same material are respectively L...

    Text Solution

    |

  11. The ratio of radii of two wires of same material is 2 : 1. If these wi...

    Text Solution

    |

  12. A rod of length l and area of cross-section A is heated from 0^(@)C to...

    Text Solution

    |

  13. Which statements are false for a metal? (1) Y lt eta (2) Y = eta ...

    Text Solution

    |

  14. Which of the following relations are false (1) 3Y = K(1 - sigma) (...

    Text Solution

    |

  15. A bar of cross section A is subjected to equal and opposite tensile fo...

    Text Solution

    |

  16. A bar of cross section A is subjected to equal and opposite tensile fo...

    Text Solution

    |

  17. A bar of cross section A is subjected to equal and opposite tensile fo...

    Text Solution

    |

  18. Statement -1 : Steel is more elastic than rubber. Statement -2 : Un...

    Text Solution

    |

  19. Statement -1 : Bulk modulus of elasticity (K) represents incompressibi...

    Text Solution

    |

  20. In the following questions, a statement of assertion is followed by a ...

    Text Solution

    |