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General Knowledge :: Physics

  1. Which physical quantity is measured in 'siemens'?

  2. A.

     Electric potential

    B.

     Electrical conductance

    C.

     Magnetic flux

    D.

     Refractive index


  3. Hydroscope is an instrument that shows changes in:

  4. A.

     Sound under water

    B.

     Atmospheric humidity

    C.

     Density of liquid

    D.

     None of these


  5. Unit of impedance is ________

  6. A.

     Ohm

    B.

     Henry

    C.

     Tesla

    D.

     Hertz


  7. Stress can be defined as ________ quantity.

  8. A.

     Scalar

    B.

     Vector

    C.

     Phasor

    D.

     Tensor


  9. In spherical polar coordinates (l, q, a), q denotes the polar angle around z-axis and a denotes the azimuthal angle raised from x-axis . Then the y-component of P is given by

  10. A.

     Psinq sina

    B.

     Psinq cosa

    C.

     Pcosq sina

    D.

     Pcosq cosa


  11. Two vectors are said to be equal if

  12. A.

     Only their magnitudes are same

    B.

     Only their directions are same

    C.

     Both magnitude and direction are same

    D.

     Magnitudes are same but directions are opposite


  13. Which of the following is a vector quantity?

  14. A.

     Area

    B.

     Power

    C.

     Electric Current

    D.

     Energy


  15. Which of the following is not a vector quantity?

  16. A.

     Acceleration

    B.

     Density

    C.

     Displacement

    D.

     Impulse


  17. Which of the following is not a vector quantity ?

  18. A.

     Speed

    B.

     Velocity

    C.

     Torque

    D.

     Displacement


  19. These waves cannot be transmitted through vacuum.

  20. A.

     Light

    B.

     Sound

    C.

     Heat

    D.

     Electromagnetic