Ir the energy levels of an oscillator are given by e, -nhv, where n - 0, I and 2. Assuming that p- hv, the probubility of the oscillator to occupy the thind energy level is A 13% B. 19% C. 31% D. SI% E 9I% B
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- A green light wavelength = 530 nm shines on a metal. It is determined that the stopping potential is 1.5V. a. calculate the binding energy of the metal. b. calculate the max speed of an ejected electron. c. calculate the minimum frequency of light that would expel electrons from the metal.the n= tate. vels for Hydrogen. rbed photon? + tion from the thi 4. A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts. a. What is the resistance of the light bulbs in ohms? b. What is the power consumed by the light bulb in watts? C. If two identical slide projectors are connected in parallel across the same 120 Volt source, what is the total current drawn from the source?Helium was first discovered when astronomers viewed the spectrum from the Sun and could not associate absorption lines associated with any terrestrial element. One wavelength that was strongly absorbed was 587.5 nm (1 nm = 1.0×10-9 m). What is the energy associated with this wavelength of light? a. 1.06 eV (or 1.70×10-19 J) b. 0.943 eV (or 1.51×10-19 J) c. 2.11 eV (or 3.38×10-19 J) d. 0.472 eV (or 7.57×10-20 J)
- 1. A system has a ground state energy of 2 eV. The system is in an excited energy state with 10 eV of energy. If the system transitions from the excited energy state to the ground state by emitting 1 eV photons, how many photons are emitted? a. Exactly 8 b. More than 8 c. More than 1 but less than 8 d. Exactly 1 e. There's no way to know for sure 2. In blackbody radiation, the wavelength that has the peak intensity a. Decreases as temperature increases b. Increases as temperature increases c. Doesn't change as temperature increasesQ2. An aluminum absorber of thickness 8 g/cm. The beam intensity is 8.24 J/ m s. a) Calculate the fraction of photons transmitted without interaction. b) What is the total transmitted beam intensity? c) What is the rate of energy absorption per unit mass in the aluminum?3.0 eV photons excite atoms in a gas from their ground state to the n = 3 excited state. The atoms are then observed emitting 2.0 eV photons. Usingwhat you learned in the table above, what other emitted photon energies would be observed?A. 3.0 eV and 5.0 eV B. 3.0 eV and 1.0 eV C. 1.0 eV and 4.0 eVD. 3.0 eV only E. 1.0 eV only
- 9Q1. A parallel beam of 1-MeV photons is normally incident on a sheet of uranium, 1.0 mm thick. The incident beam intensity is 104 MeV/ cm s. a) Calculate the energy fluence rate transmitted by the sheet. b) What fraction of the transmitted energy fluence rate is due to uncollided photons? c) What physical processes are responsible for energy transfer to the sheet? Given (µen/p)= 0.05 cm²/g p= 18.79 g/cm'.