Home
Class 12
PHYSICS
Length of a wire is doubled, when 20 xx ...

Length of a wire is doubled, when `20 xx 10^(8) N//m^(2)` stress is applied on it. Its Young’s modulus of elasticity in N/m2 will be

A

`20 xx 10^(8)`

B

`20 xx 10^(9)`

C

`20 xx 10^(10)`

D

`10 xx 10^(8)`

Text Solution

AI Generated Solution

Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

A wire increases by 10^(-3) of its length when a stress of 1xx10^(8)Nm^(-2) is applied to it. What is the Young's modulus of the material of the wire?

The length of a suspended loire increases by 10^-4 of its original length when a stress of 10^7 Nm^-2 is applied on it. Calculate the Young's modulus of the material of the wire.

Knowledge Check

  • If the length of a wire is doubled, then its Young's modulus

    A
    become double
    B
    become half
    C
    increases but becomes not exactly double
    D
    remains unchanged

  • The Young's modulus of the material of a wire is 6 xx 10^(12) N//m^(2) and there is no transverse strain in it.then it modulus of rigidity will be

    A
    `3 xx 10^(12) N//m^(2)`
    B
    `2 xx 10^(12) N//m^(2)`
    C
    `10^(12) N//m^(2)`
    D
    None of the above

  • Assertion: From the relation Y = (Fl)/(ADeltal) , we can say that, if length of a wire is doubled, its young's modulus of elasticity will also becomes two times. Reason : Modulus of elasticity is a material property.

    A
    If both Assertion and Reason are true and the Reason is correctn explanation of the Assertion.
    B
    If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
    C
    If Assertion is true, but the Reason is false.
    D
    If Assertion is false but the Reason is true.

    • Similar Questions

    Explore conceptually related problems

    On applying a stress of 20 xx 10^(8) N//m^(2) the length of a perfectly elastic wire is doubled. It Young's modulus will be

    A body of mass 3.14 kg is suspended from one end of a wire of length 10 m . The radius of cross-section of the wire is changing uniformly from 5xx10^(-4) m at the top (i.e. point of suspension) to 9.8xx10^(-4) m at the bottom . Young's modulus of elasticity is 2xx10^(11) N//m^(2) . The change in length of the wire is

    An elongation of 0.2% in a wire of cross section 10^(-4)m^(2) causes tension 1000 N. Then its young's modulus is

    A structural steel rod has a radius r(=10 mm) and a length l(=1 m). When a force F(= 100 kN) is applied, it stretches it along its length. Young's modulus of elasticity of the structural steel is 2.0xx10^(11) Nm^(-2) . What is the stress produced ?

    A structural steel rod has a radius r(=10 mm) and a length l(=1 m). When a force F(= 100 kN) is applied, it stretches it along its length. Young's modulus of elasticity of the structural steel is 2.0xx10^(11) Nm^(-2) . What is the elastic energy density of the steel rod ?

    Home
    Profile