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Exam (elaborations)

Quantum Mechanics Exam Questions and Answers

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  • Quantum Mechanics

Quantum Mechanics Exam Questions and Answers Which has more energy, a photon of: - Answer-Red Light If the cuttoff frequency for light in the photoelectric effect for metal B is greater than that of metal A. Which metal has a greater work function (binding energy)? - Answer-Metal B A metal ...

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  • August 11, 2024
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  • Exam (elaborations)
  • Questions & answers
  • Quantum Mechanics
  • Quantum Mechanics
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Quantum Mechanics Exam Questions
and Answers

Which has more energy, a photon of: - Answer-Red Light

If the cuttoff frequency for light in the photoelectric effect for metal B is greater than that
of metal A. Which metal has a greater work function (binding energy)? - Answer-Metal B

A metal surface is struck with light of λ= 400 nm, releasing a stream of electrons. If the
400 nm light is replaced by λ= 300 nm light of the same intensity, what is the result? -
Answer-Emitted electrons are more energetic

A metal surface is struck with light of λ= 400 nm, releasing a stream of electrons. If the
light intensity is increased (without changing λ), what is the result? - Answer-More
electrons are emitted in a given time interval

A photocell is illuminated with light with a frequency above the cutoff frequency. The
magnitude of the current produced depends on: - Answer-Intensity of the light

The speed of proton A is larger than the speed of proton B. Which one has the longer
wavelength? - Answer-Proton B

An electron and a proton have the same speed. Which has the longer wavelength? -
Answer-Electron

An electron and a proton have the same momentum. Which has the longer wavelength?
- Answer-Same

For the possible transitions shown, for which transition will the electron gain the most
energy? - Answer-E2-E5

The Balmer series for hydrogen can be observed in the visible part of the spectrum.
Which transition leads to the reddest line in the spectrum? - Answer-E3-E2 (Longest
Wavelength)

Suppose there is an atom that contains exactly five energy levels. How many different
transitions are possible? (Count only one direction!) - Answer-10

Suppose the Rutherford model was correct (instead of the Bohr model). What would the
absorption spectrum of a hydrogen atom look like? - Answer-It would be completely
black

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