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Dual Nature of ...

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  • Question 1
    4 / -1

    The momentum of a photon of energy 1 MeV in kg -ms-1 , will be

  • Question 2
    4 / -1

    The ratio of the de-Broglie wavelength of an α-particle and a proton of same kinetic energy is

  • Question 3
    4 / -1

    An electron is accelerated through a potential difference of V volt The speed of electrons will be

  • Question 4
    4 / -1

    If α, β and γ rays carry same momentum, which has the longest wavelength ?

  • Question 5
    4 / -1

    If the kinetic energy of a free electron doubles, its de-Broglie wavelength changes by the factor

  • Question 6
    4 / -1

    The de-Broglie wavelength of an electron is the same as that of a 50 keV X-ray photon. The ratio of the energy of the photon to the kinetic energy of the electron is (the energy equivalent of electron mass is 0.5 MeV)

  • Question 7
    4 / -1

    If a source of power 4 kW produces 1020 photon/sec the radiation belong to a part of the spectrum called

  • Question 8
    4 / -1

    The energy of an X–ray photon of wavelength 1 Å is (h = 6.6 × 10-34 J-s)

  • Question 9
    4 / -1

    Which of the following supports the wave nature of X-rays?

  • Question 10
    4 / -1

    The potential difference applied to an X-ray tube is 5 kV, and the current through it is 3.2 mA. The number of electrons striking the target per sec is
    (take, e =1.6 × 10-19 C)

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