The unit of coefficient of linear expansion or volume expansion is__________?

Related Mcqs:

1. The co efficient of linear expansion is equal to__________?

   A. ΔL = αLΔT
   B. ΔL/LΔT
   C. LΔT/ΔL
   D. αLΔT-ΔL

   Submitted by: Mahrukh

2. linear expansion occurs in_________?

   A. solid
   B. liquid
   C. both
   D. none

   Submitted by: Mahrukh

3. SI unit of the coefficient of viscosity is___________________?

   A. Kg.m.S-1
   B. Kg m-1.S-1
   C. Kg.m.S
   D. Kg-1.m-1.S-1

4. 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

5. 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)

6. The direction of the linear velocity of a body moving in a circle is______________?

   A. along the axis of rotation
   B. along the tangent
   C. directed towards the centre
   D. directed away from the centre

7. hen a body moves in a circle, the angle between its linear velocity and angular velocity is always_______________?

   WA. 180°
   B. 0°
   C. 90°
   D. 45°

8. When a wheel 1 m in diameter makes 30 rev min the linear speed of the point on its rim in ms-1 is_______________?

   A. 2π
   B. π/2
   C. π
   D. 20π

9. Linear momentum of a photon is_______________?

   A. zero
   B. hv/c2
   C. hv/c
   D. c2/hv

10. The linear momentum of an X-ray photon of wavelength 0.1A is_______________?

    A. 6.625x1023N-s
    B. 66.25x1023N-s
    C. 662.5x1023N-s
    D. data is insufficient