Home
Class 11
PHYSICS
Young's modulus of rubber is 10^(4) Nm^(...

Young's modulus of rubber is `10^(4) Nm^(-2)` and area of cross-sectionis `2 cm^(2)` . If force of `2xx10^(5)` dynes is applied along its length ,then its initial length L becomes

A

`3l`

B

`4l`

C

`2l`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
C
`/_\l=(Fl)/(aY)`
`/_\l=(2xx10^(5)xx1)/(2xx10^(4)xx10^(4))` or `/_\l=1`
So, new length is `2l`.
Promotional Banner

Topper's Solved these Questions

  • PROPERTIES OF SOLIDS AND FLUIDS

    CENGAGE PHYSICS ENGLISH|Exercise Multiple Correct|17 Videos

  • PROPERTIES OF SOLIDS AND FLUIDS

    CENGAGE PHYSICS ENGLISH|Exercise Assertion- Reasoning|13 Videos

  • PROPERTIES OF SOLIDS AND FLUIDS

    CENGAGE PHYSICS ENGLISH|Exercise Subjective|16 Videos

  • NEWTON'S LAWS OF MOTION 2

    CENGAGE PHYSICS ENGLISH|Exercise Integer type|1 Videos

  • RIGID BODY DYNAMICS 1

    CENGAGE PHYSICS ENGLISH|Exercise Integer|11 Videos

Similar Questions

Explore conceptually related problems

Young's modulus of rubber is 10^(4) N//m^(2) and area of cross section is 2 cm^(2) . If force of 2 xx 10^(5) dyn is applied along its length, then its final length becomes

Young 's modulus of steel is 2.0 xx 10^(11)N m//(2) . Express it is "dyne"/cm^(2) .

Calculate the work done in streching a steel wire of Young's modulus of 2xx10^(11) Nm^(-2) mass of 40kg,length of 200 cm and area of cross-section is 0.06 cm^(2) slowly applied without the elastic limit being reached.

The length of a rod is 20 cm and area of cross-section 2 cm^(2) . The Young's modulus of the material of wire is 1.4 xx 10^(11) N//m^(2) . If the rod is compressed by 5 kg-wt along its length, then increase in the energy of the rod in joules will be

Young's modulus of steel is 19xx10^10 N/m^2 . Expres it indyne/cm^2. Here dyne is the CGS unit of force.

The Youngg's modulus of a material is 6 xx 10^(10) Nm^(-2) and its bulk modulus is 2.8 xx 10^(10) Nm^(-2) . What is its Poisson's ratio ?

A bar of mass m and length l is hanging from point A as shown in the figure . If the Young's modulus of elasticity of the bar is Y and area of cross - section of the wire is A, then the increase in its length due to its own weight will be

Speed of a transverse wave on a straight wire (mass 6 g, length 120 cm and area of cross section 1.2 mm^(2) is 100 m/s) . If the Young's modulus of wire is 10^(12) Nm^(-2) the extension of wire over its natural length is :

Speed of a transverse wave on a straight wire (mass 6 g, length 120 cm and area of cross section 1.2 mm^(2) is 100 m/s) . If the Young's modulus of wire is 10^(12) Nm^(-2) the extension of wire over its natural length is :

A wire of length 1 m and area of cross section 2xx10^(-6)m^(2) is suspended from the top of a roof at one end and a load of 20 N is applied at the other end. If the length of the wire is increased by 0.5xx10^(-4)m , calculate its Young’s modulus (in 10^(11)N//m^(2)) .

CENGAGE PHYSICS ENGLISH-PROPERTIES OF SOLIDS AND FLUIDS-Single Correct
  1. If S is stress and Y is Young's modulus of material of a wire, the ene...

    Text Solution

    |

  2. What amount of work is done in increasing the length of a wire through...

    Text Solution

    |

  3. Young's modulus of rubber is 10^(4) Nm^(-2) and area of cross-sectioni...

    Text Solution

    |

  4. When a certain weight is suspended from a long uniform wire, its lengt...

    Text Solution

    |

  5. Two wires of the same material have lengths in the ratio 1:2 and their...

    Text Solution

    |

  6. A piece of copper wire has twice the radius of a piece of steel wire....

    Text Solution

    |

  7. The breaking stress for a substance is 10^(6)N//m^(2). What length of ...

    Text Solution

    |

  8. Water rises to a height of 2 cm in a capillary tube. If the tube is ti...

    Text Solution

    |

  9. A spherical liquid drop of radius R is divided into eight equal drople...

    Text Solution

    |

  10. Air is pushed into a soap bubble of radius r to double its radius. If ...

    Text Solution

    |

  11. A water drop is divided into eight equal droplets. The pressure differ...

    Text Solution

    |

  12. A vessel whose , bottom has round holes with diameter 0.1 mm, is fille...

    Text Solution

    |

  13. Water rises to a height of 10cm in a certain capillary tube. An anothe...

    Text Solution

    |

  14. The velocity of small ball of mass M and density (d(1)= when dropped a...

    Text Solution

    |

  15. Two soap bubbles, one of radius 50 mm and the other of radius 80 mm, a...

    Text Solution

    |

  16. A glass rod of radius r(1) is inserted symmetrically into a vertical c...

    Text Solution

    |

  17. A large number of droplets, each of radius a, coalesce to form a bigge...

    Text Solution

    |

  18. A thick rope of density rho and length L is hung from a rigid support....

    Text Solution

    |

  19. When the load on a wire is increased from 3 kg wt to 5 kg wt the elong...

    Text Solution

    |

  20. Two identical wires of iron and copper with their Young's modulus in t...

    Text Solution

    |