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General Knowledge :: Physics

  1. Which one type of radiation has the longest wave length

  2. A.

     Infrared

    B.

     Ultraviolet

    C.

     X-ray

    D.

     Radio Wave


  3. Forged documents are detected by

  4. A.

     Ultraviolet rays

    B.

     Infra-red rays

    C.

     Beta rays

    D.

     Gamma rays


  5. The radiation initially produced in fluorescent tube is

  6. A.

     Infrared

    B.

     Ultraviolet

    C.

     Microwaves

    D.

     X-rays


  7. In a vacuum, all electromagnetic waves have the same

  8. A.

     Velocity

    B.

     Wavelenth

    C.

     Frequency

    D.

     All the above


  9. Ultra violet radiations of the Sun do not reach the earth because, earth's atmosphere is surrounded by

  10. A.

     Carbon dioxide

    B.

     Ammonia

    C.

     Chlorine

    D.

     Ozone


  11. Which one among the following is not an electromagnetic wave?

  12. A.

     X-Ray

    B.

     R-Ray

    C.

     Cathode Ray

    D.

     Infrared Ray


  13. Electromagnetic waves are transverse in nature is evident by

  14. A.

     Reflection

    B.

     Polarisation

    C.

     Interference

    D.

     Diffraction


  15. Which of the following parts of the sunlight makes the solar cooker hot ?

  16. A.

     Ultra violet

    B.

     Red light

    C.

     Infra red

    D.

     Cosmic rays


  17. In the atmosphere ultraviolet rays are absorbed by

  18. A.

     Oxygen

    B.

     Nitrogen

    C.

     Ozone

    D.

     Helium


  19. Energy of Ultraviolet rays is great than

  20. A.

     Infrared rays

    B.

     Gamma rays

    C.

     X-rays

    D.

     Cosmic rays