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12th Standard English Medium Physics Subject Dual Nature of Radiation and Matter Book Back 2 Mark Questions with Solution Part - II Question Bank Software May-31 , 2021

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12th Standard English Medium Physics Subject Dual Nature of Radiation and Matter Book Back 2 Mark Questions with Solution Part - II

12th Standard English Medium Physics Subject Dual Nature of Radiation and Matter Book Back 2 Mark Questions with Solution Part - II

12th Standard

    Reg.No. :
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Physics

Time : 00:30:00 Hrs
Total Marks : 10

    Part I

    5 x 2 = 10

  1. How will you define threshold frequency?

  2. State de Broglie hypothesis.

  3. A proton and an electron have same kinetic energy. Which one has greater de Broglie wavelength. Justify.

  4. Name an experiment that shows the wave nature of the electron. Which phenomenon was observed in this experiment using an electron beam?

  5. A deutron and an alpha particle alpha particle are accelerated with the same potential. Which one of the two has
    i) greater value of de Broglie wavelength associated with it and
    ii) less kinetic energy? Explain.

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