New ! Physics MCQ Practise Tests



Dual Nature of Radiation and Matter 2 Mark Creative Question Paper With Answer Key

12th Standard

    Reg.No. :
  •  
  •  
  •  
  •  
  •  
  •  

Physics

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

     2 Marks

    15 x 2 = 30
  1. What is surface barrier?

  2. Give example for photosensitive materials Why is called so?

  3. What is photo emissive cell?

  4. What is photo voltaic cell?

  5. What is photo conductive cell?

  6. What is meant by de Broglie waves?

  7. 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

  8. What is a photon?

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

  10. In photoelectric effect, why should the photoelectric current increase as the intensity of monochromatic radiation incident on a photosensitive surface is increased? Explain.

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

  12. Name the phenomenon which shows the quantum nature of electromagnetic radiation.

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

  14. Do all the electrons that absorb a photon come out as photoelectrons?

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

*****************************************

Reviews & Comments about 12th Standard Physics English Medium - Dual Nature of Radiation and Matter 2 Mark Creative Question Paper and Answer Key 2022 - 2023

Write your Comment