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General Knowledge :: Physics

  1. The dimensional formula for universal gravitational constant is

  2. A.

     M 1L3T2

    B.

     ML2T–2

    C.

     M–2

    D.

     M–1L3T–2


  3. Which one of the following physical quantities has the same dimensions as that of Planck's constant?

  4. A.

     Linear momentum

    B.

     Angular momentum

    C.

     Force

    D.

     Potential energy


  5. Period of oscillation of 3 cm microwaves in seconds is

  6. A.

     1 × 1010

    B.

     1 × 10–10

    C.

     0.01

    D.

     0.001


  7. When a person sitting on a swing stands up on the swing, the frequency of oscillation

  8. A.

     Decreases

    B.

     Increases

    C.

     Becomes infinite

    D.

     Does not change


  9. A system exhibiting S.H.M. must possess

  10. A.

     Elasticity as well as inertia

    B.

     Elasticity, inertia and an external force

    C.

     Elasticity only

    D.

     Inertia only


  11. Which of the following is an example of simple harmonic motion?

  12. A.

     Earth spinning on its axis

    B.

     Simple pendulum motion

    C.

     Ball bouncing on floor

    D.

     Motion of a ceiling fan


  13. Boyle's law is a relationship between

  14. A.

     Pressure and volume

    B.

     Volume and temperature

    C.

     Volume and density

    D.

     Pressure and temperature


  15. Which of the metals has the maximum thermal conductivity?

  16. A.

     Iron

    B.

     Aluminium

    C.

     Silver

    D.

     Copper


  17. Which law relates to the ideal gas law?

  18. A.

     P1T1 = P2T2

    B.

     P1/V1 = P2/V2

    C.

     P1V1 = P2V2

    D.

     T1/V1 = T2/V2


  19. A solid ball of metal has a spherical cavity inside it. When the ball is heated the volume of the cavity will

  20. A.

     Increase

    B.

     Decrease

    C.

     Remain unaffected

    D.

     Have its shape changed