Home > Class 12 Physics > Quizzes > Class 12 Physics: Dual Nature of Radiation and Matter
Class 12 Physics: Dual Nature of Radiation and Matter
Fast practice, instant feedback. Timer auto-submits when time’s up.
Avg score: 11% • Most missed: “Why does light travel as a wave?”

MCQs on electron emission, photoelectric effect and its experimental studies, light photoelectric and wave theories, einstein photoelectric equations, photon, matter wave nature, davisson and germer experiments.

Class 12 Physics: Dual Nature of Radiation and Matter
Time left 00:00
25 Questions

1. Which theory is confirmed by the Davisson – Germer experiment?
2. Which among the following shows the particle nature of light?
3. Calculate the energy of a photon of wavelength 6600 angstroms.
4. Calculate the kinetic energy of a photoelectron (in eV) emitted on shining light of wavelength 6.2 × 10-6 m on a metal surface. The work function of the metal is 0.1 eV.
5. What is the frequency of a photon whose energy is 66.3 eV?
6. Calculate the energy of a photon of wavelength 6600 angstroms.
7. Pick out the apparatus used in the experiment of the photoelectric effect from the following.
8. Which theory of light is wave theory or particle theory?
9. What is the de – Broglie wavelength of a ball of mass 150 g moving at a speed of 50 m/s?
10. Two metals A and B have work functions 4 eV and 10 eV respectively. Which metal has a higher threshold wavelength?
11. Which photon is more energetic: A red one or a violet one?
12. For a photosensitive surface, the work function is 3.3 × 10-19 J. Calculate the threshold frequency.
13. Photons of energy 10.25 eV fall on the surface of the metal emitting photoelectrons of maximum kinetic energy 5.0 eV. What is the stopping voltage required for these electrons?
14. What will be the number of photons emitted per second, if the power of the radio transmitter is 15 kW and it operates at a frequency of 700 kHz?
15. Identify the process in which an electron escapes from the metal surface.
16. Among the following four spectral regions, in which of them, the photon has the highest energy in?
17. Why are alkali metals most suited as photo-sensitive metals?
18. What is the de – Broglie wavelength associated with an electron, accelerated through a potential difference of 200 volts?
19. Identify the conclusion of the photoelectric experiment from the following.
20. Why does light travel as a wave?
21. The sun gives light at the rate of 1500 W/m2 of area perpendicular to the direction of light. Assume the wavelength of light as 5000Å. Calculate the number of photons/s arriving at 1 m2 area at that part of the earth.
22. Which radiations will be most effective for the emission of electrons from a metallic surface?
23. What is the momentum of a photon of wavelength λ?
24. Which of the following increases the maximum kinetic energy of the photoelectrons emitted?
25. What is the energy of a photon of wavelength λ?

⚡ Recently practiced quizzes in this topic
Live quiz activity
Class 12 Physics: Electrostatic Potential and Capacitance Class 12 Physics Practice Test: Coulomb's Law Class 12 Physics Practice Test: Combination of Capacitors Class 12 Physics Practice Test: Cells, EMF and Internal Resistance Class 12 Physics Practice Test: Motional Electromotive Force Class 12 Physics Practice Test: Torque on Current Loop & Magnetic Dipole Class 12 Physics: Current Electricity Class 12 Physics: Charges and Fields MCQs for Electric Charges and Fields Class 12 Physics: Alternating Current
 
❤ If you liked Fatskills, consider supporting us by checking out The Life Manuals You Never Got.

🌈  Our mission is to help improve your scores in any subject and exam withonline quizzes, practice tests, study guides, & advice for students. Since 2018.
About | Explore | User Guide | Topics | Subjects | Doubt Solver | Career Aptitude Test | Answers | Free Tools | What Should We Know?
Privacy | Terms |
Without work one finishes nothing. - Ralph Waldo Emerson
© 2026 Fatskills.com

All trademarks, logos and brand names are the property of their respective owners. All company, product and service names used in this website are for identification purposes only. Use of these names, trademarks and brands does not imply endorsement.