Electron Energy Levels and Transitions

The video tutorial covers a modern physics problem from the 2011 AP Physics B exam, focusing on energy levels in a hypothetical atom. It explains how to draw and label an energy level diagram, calculate wavelengths for transitions between energy levels, and understand electron excitation. The tutorial also discusses photon emission and how to determine the spectrum placement of emitted photons.

What are the energy levels of the hypothetical atom discussed in the problem?

• -4 eV, 3 eV, 2 eV

• -5 eV, 2 eV, 0 eV

• -7 eV, 4 eV, 1 eV

• -6 eV, 3 eV, 1 eV

What is the formula used to calculate the wavelength of a photon emitted during a transition?

• E = hf

• λ = HC/E

• λ = c/f

• E = mc^2

Which transition results in the shortest wavelength photon?

• From level 3 to level 1

• From level 2 to level 1

• From level 3 to level 2

• From level 1 to level 2

What is the energy required to excite an atom from the ground state to the n=2 state?

• 4 eV

• 2 eV

• 5 eV

• 3 eV

How much kinetic energy does an electron need to excite another electron to the n=2 state?

• 3.8 eV

• 5.8 eV

• 4.8 eV

• 2.8 eV

What happens when an electron with 4.8 eV collides with another electron in the ground state?

• The electron absorbs all 4.8 eV

• The electron absorbs 3 eV and the rest is kinetic energy

• No energy is absorbed

• The electron absorbs 5 eV

What is the energy released when an atom decays from n=2 to the ground state?

• 5 eV

• 4 eV

• 3 eV

• 2 eV

In which part of the spectrum does the photon emitted from n=2 to n=1 transition fall?

• X-ray

• Ultraviolet

• Visible

• Infrared

What is the wavelength of the photon emitted during the n=2 to n=1 transition?

• 700 nm

• 620 nm

• 413 nm

• 248 nm

What is the visible light spectrum range in nanometers?

• 600-900 nm

• 300-500 nm

• 400-700 nm

• 500-800 nm