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General Knowledge :: Physics

  1. In a Laser (say neon laser) all the atoms emit the light waves of

  2. A.

     Same frequency

    B.

     Same amplitude

    C.

     Same phase

    D.

     All of the above


  3. The Laser is a beam of radiations which are

  4. A.

     Non-coherent and monochromatic

    B.

     Coherent and monochromatic

    C.

     Non-coherent and non-monochromatic

    D.

     Coherent and non-monochromatic


  5. In quantum mechanics a particle is represented by a

  6. A.

     Wave

    B.

     Wave packet

    C.

     Particle

    D.

     None of the above


  7. The p wave of a normal Electrocardiogram indicates

  8. A.

     Atrial depolarization

    B.

     Ventricular repolarization

    C.

     Atrial repolarization

    D.

     Ventricular depolarization


  9. Which of the following phenomenon helps to conclude that light is a transverse wave?

  10. A.

     Interference

    B.

     Diffraction

    C.

     Polarisation

    D.

     Refraction


  11. What is the phenomenon which established the transverse nature of light ?

  12. A.

     Reflection

    B.

     Interference

    C.

     Diffraction

    D.

     Polarisation


  13. Golden view of sea shell is due to

  14. A.

     Diffraction

    B.

     Dispersion

    C.

     Polarization

    D.

     Reflection


  15. The light of distant stars is affected by

  16. A.

     Interstellar Dust

    B.

     The Earth's Atmosphere

    C.

     Both A & B

    D.

     None of the above


  17. A soap bubble shows colours when illuminated with white light. This is due to

  18. A.

     Diffraction

    B.

     Polarisation

    C.

     Interference

    D.

     Reflection


  19. Which of the following waves cannot be polarised?

  20. A.

     Radio

    B.

     Ultra violet

    C.

     Infrared

    D.

     Ultrasonic