The ration stress to strain in youngs modulus of the material then tension is__________________?

Related Mcqs:

1. When a force is applied at one end of an elastic wire it produces at strain ∝ in the wire. If y is the youngs modulus of the material of the wire the amount of energy stored per unit volume of the wire is given by_________________?

   A. Y∝
   B. 2Y∝
   C. Y∝/2
   D. Y∝2

2. A rubber cord of cross-sectional area 2cm2 has a length of 1m. When a tensile force of 10N is applied the length of the cord increases by 1cm. What is the youngs modulus of rubber ?

   A. 2×108 Nm-2
   B. 5×106 Nm-2
   C. 0.5×10-6 Nm-2
   D. 0.2×10-6Nm-2

3. A uniform steel wire of length 4m and area of cross-section 3×10-6m2 is extended by 1mm by the application of a force. If the youngs modulus of steel is 2×1011 Nm-2 the energy stored in the wire is___________________?

   A. 0.025J
   B. 0.50J
   C. 0.75J
   D. 0.100J

4. A certain stress applied to an elastic material produces a certain strain in it. If the elastic limit is not exceeded the energy gained per unit volume of the material is given by_________________?

   A. Stress/strain
   B. (stress/strain)
   C. Stress x strain
   D. (Stress / strain)

5. A wire obeys Hooks law is of length 11 when it is in equilibrium under a tension F1. Its length becomes 12 when the tension is increased to F2. The energy stored in the wire during this process is____________________?

   A. (F1+F2) (121+122)
   B. (F1+F2) (122-112)
   C. (F1+F2) (12-11)
   D. (F1+F2) (12-11)

6. A body moving along the circumference of a circle completes two revolutions. If the radius of the circular path is R the ration of displacement to the covered path will be_____________?

   A. πR
   B. 2π R
   C. 0
   D. 4πR

7. What is the SI unit of modulus of elasticity of substance ?

   A. Nm-2
   B. Jm-2
   C. Nm-1
   D. Being a number it has no unit.

8. The dimension of elastic modulus is ___________________ ?

   A. ML-1T-2
   B. ML-2T-2
   C. MLT-2
   D. ML2T-2

9. Young’s modulus is the property of __________?

   A. Gas only
   B. Liquid only
   C. Solid only
   D. All of the above

   Submitted by: Naveed Tahir

10. A bird sitting on a high tension electric wire does not get electrocuted because:

    A. Sit has high resistance
    B. the body is earthed
    C. it does not form a closed path for the flow of current
    D. its feet are good insulators

    Submitted by: Abid Hussain