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12th Standard English Medium Physics Subject Dual Nature of Radiation and Matter Creative 2 Mark Questions with Solution Part - I Question Bank Software Jun-18 , 2021

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

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

12th Standard

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Physics

Time : 00:30:00 Hrs
Total Marks : 10
    5 x 2 = 10

  1. Work function of aluminium is 4.2 eV. If two photons, each of energy 2.5 eV, are incident on It surtace, will the emission of electrons take place? Justify your answer

  2. Define the term 'stopping potential' in relation to photoelectric effect.

  3. The stopping potential in an experiment on photoelectric effect is 2V. What is the maximum kinetic energy of the photoelectrons emitted?

  4. Define intensity of radiation on the basis of photon picture of light. Write its SI unit.

  5. If the intensity of radiation in a photocell is increased how does the stopping potential vary?

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