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Class 12 Physics Practice Test: Particle Nature of Light : The Photon
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Avg score: 70% • Most missed: “What is the momentum of a photon of wavelength λ?”
Class 12 Physics Practice Test: Particle Nature of Light : The Photon
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10 Questions

1. 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?
2. Which among the following shows the particle nature of light?
3. 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?
4. When a proton is accelerated through 1 V, then its kinetic energy will be 1 V.
5. What is the momentum of a photon of wavelength λ?
6. What will be the photon energy for a wavelength of 5000 angstroms, if the energy of a photon corresponding to a wavelength of 7000 angstroms is 4.23 × 10-19 J?
7. What is the frequency of a photon whose energy is 66.3 eV?
8. Calculate the energy of a photon of wavelength 6600 angstroms.
9. Among the following four spectral regions, in which of them, the photon has the highest energy in?
10. What is the energy of a photon of wavelength λ?

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