Home / General Knowledge / Physics :: section - 9

General Knowledge :: Physics

  1. A mirage occurs because of

  2. A.

     Reflection by hot ground

    B.

     Total internal reflection by layers of air

    C.

     Interference of light

    D.

     Diffraction of light

    View Answer

    Workspace

    Discuss Discuss in Forum


  3. Optical fibres are based on the phenomenon of

  4. A.

     Interference

    B.

     Dispersion

    C.

     Diffraction

    D.

     Total Internal Reflection

    View Answer

    Workspace

    Discuss Discuss in Forum


  5. The angle between the ________ and the incident ray is called the angle of incidence.

  6. A.

     Surface

    B.

     Normal

    C.

     Tangent

    D.

     Reflected ray

    View Answer

    Workspace

    Discuss Discuss in Forum


  7. A periscope works by the principle of

  8. A.

     Total internal reflection

    B.

     Refraction

    C.

     Diffraction

    D.

     Reflection

    View Answer

    Workspace

    Discuss Discuss in Forum


  9. A periscope works on the principle of

  10. A.

     Refraction

    B.

     Total internal reflection

    C.

     Diffraction

    D.

     Reflection

    View Answer

    Workspace

    Discuss Discuss in Forum


  11. Total internal reflection can not take place when light goes from :

  12. A.

     Glass to water

    B.

     Water to glass

    C.

     Water to air

    D.

     Glass to air

    View Answer

    Workspace

    Discuss Discuss in Forum


  13. A rear-view mirror for driving is

  14. A.

     Plain

    B.

     Concave

    C.

     Convex

    D.

     Inverted

    View Answer

    Workspace

    Discuss Discuss in Forum


  15. The reflector of a search light is a :

  16. A.

     Convex mirror

    B.

     Concave mirror

    C.

     Plane mirror

    D.

     Cylindrical mirror

    View Answer

    Workspace

    Discuss Discuss in Forum


  17. Optical Fibre technology works on which of these principles of Physics?

  18. A.

     Bernoulli's Principle

    B.

     Newton's law of Motion

    C.

     Total internal reflection of Light

    D.

     Photoelectric effect

    View Answer

    Workspace

    Discuss Discuss in Forum


  19. What is the reason for formation of Mirage in desert?

  20. A.

     Refraction of light

    B.

     Reflection of light

    C.

     Total internal reflection of light

    D.

     Both Refraction and Total internal reflection of light

    View Answer

    Workspace

    Discuss Discuss in Forum