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12th Standard English Medium Physics Subject Dual Nature of Radiation and Matter Creative 5 Mark Questions with Solution Part - II Question Bank Software Jun-18 , 2021

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12th Standard English Medium Physics Subject Dual Nature of Radiation and Matter Creative 5 Mark Questions with Solution Part - II

12th Standard English Medium Physics Subject Dual Nature of Radiation and Matter Creative 5 Mark Questions with Solution Part - II

12th Standard

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Physics

Time : 00:30:00 Hrs
Total Marks : 25
    5 x 5 = 25

  1. The wavelength of light from the spectral emission line of sodium is 589 nm. Find the kinetic energy at which
    (a) an electron and
    (b) a neutron would have the same Broglie wavelength.

  2. An ∝ - particle and a proton are accelerated from rest through the same potential difference V. Find the ratio of de Broglie wavelength associated with them.

  3. An electron and photon have same energy 100 eV. which has greater associated wavelength?

  4. Plot a graph showing the variation of photoelectric current with the intensity of light. The work function for the following metals is given. Na: 2.75 eV and Mo: 4.175 eV.  Which of these will not give photoelectron emission from a radiation of wavelength 3300 Å from a laser bean?

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