22.3a Ex1 MJ13 P42 Q7 Transition Diagram | A2 Quantum Physics | Cambridge A Level Physics
HTML-код
- Опубликовано: 24 окт 2024
- Example 1 - 9702/42/M/J/13: (a) The emission spectrum of atomic hydrogen consists of a number of discrete wavelengths. Explain how this observation leads to an understanding that there are discrete electron energy levels in atoms.
#9702s13p42 #A2energyLevelsP4 #Lv2
(b) Some electron energy levels in atomic hydrogen are illustrated in Fig. 7.1. The longest wavelength produced as a result of electron transitions between two of the energy levels shown in Fig. 7.1 is 4.0 × 10^-6 m.
(i) On Fig. 7.1, draw, and mark with the letter L, the transition giving rise to the wavelength of
4.0 × 10^-6 m, draw, and mark with the letter S, the transition giving rise to the shortest
wavelength.
(ii) Calculate the wavelength for the transition you have shown in (i) part 2.
(c) Photon energies in the visible spectrum vary between approximately 3.66 eV and
1.83 eV. Determine the energies, in eV, of photons in the visible spectrum that are produced by
transitions between the energy levels shown in Fig. 7.1.
#A2quantumPhysics Playlist:
• Ch22 Quantum Physics |...
Instagram Pocket Guide ( / etphysics )
More Resources (9702-physics.b...)
Support us! ( / etphysics )
Tuition/Tutoring inquiries:
Email: suitlin@gmail.com
Whatsapp: wa.me/60126679171
#CambridgeALevelPhysics
9702_s13_qp42
You guys are the only reason I'm going to be able to pass my physics exam. Thank you for making such amazing resources available to us
how did you do
@@tz9422 i got an A ^-^
Hi Ms, for question 7(c),why isn’t the negative sign of energy considered when calculating difference in energy? Why not (-3.4)-(-0.54)?
We could the negative signs, following the convention of final - initial, but in Quantum we don't care too much about the sign, just the magnitude!
The sign just tells us if it's an increase or decrease in energy level
Thank u!!
9:06 shouldnt we convert to joules from eV?
nvm lol