A2 Physics - Quantum physics

What is the photoelectric effect?

• The emission of electrons from the surface of a metal upon the absorption of electromagnetic radiation

• The emission of protons from the surface of a metal upon the absorption of electromagnetic radiation

• The emission of photons from the surface of a metal upon the absorption of electromagnetic radiation

• The emission of neutrons from the surface of a metal upon the absorption of electromagnetic radiation

What are photoelectrons?

• Electrons emitted from the surface of a metal upon the absorption of electromagnetic radiation

• Protons emitted from the surface of a metal upon the absorption of electromagnetic radiation

• Photons emitted from the surface of a metal upon the absorption of electromagnetic radiation

• Neutrons emitted from the surface of a metal upon the absorption of electromagnetic radiation

What does the photoelectric effect provide evidence for?

• Light is quantised, or carried in discrete packets

• Light is continuous and has no discrete packets

• Light is a wave and not a particle

• Light is a particle and not a wave

What determines whether a photoelectron is emitted?

• The frequency of the light

• The intensity of the light

• The wavelength of the light

• The speed of the light

When an electron absorbs energy, it moves ________.

• from a higher energy level to a lower energy level

• from a lower energy level to a higher energy level

• in a circle

• toward the nucleus

When an electron moves from a higher energy level to a lower energy level, it ____________.

• it releases energy in the form of light

• it absorbs energy in the form of light

• it breaks in half

• it releases a sonic boon

A ground state electron is

• freshly crushed into a fine powder.

• in the highest possible energy level.

• in the lowest possible energy level.

• constantly emitting light.

In the speed of light equation, c stands for

• frequency

• wavelength

• the speed of light

• Carbon

If waves can behave like particles, then particles can behave like a wave. This is the idea behind...

• Quantization of Energy

• Photoelectric Effect

• Compton Effect

• deBroglie Waves

• Uncertainty Principle

A ____ is a discrete, quantized bundle of energy

• Photoelectric effect

• Photon

• Quantized

• Proton