Modern Physics


  1. The phenomenon of ejection of electrons from the surface of metals, when light of suitable wavelength falls on it, is known as









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    NA

    Correct Option: C

    NA


  1. Which of the following phenomena is observed when black discharge occurs in a discharge tube ?









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    NA

    Correct Option: A

    NA



  1. In a discharge tube, ionization of enclosed gas is produced due to collisions between









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    NA

    Correct Option: C

    NA


  1. Nuclear fusion is the source of energy in









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    NA

    Correct Option: D

    NA



  1. In a nuclear reactor, cadmium rods are used to









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    NA

    Correct Option: C

    NA