40 DOL

What is a photon?

• A particle of sound

• A quantum of light energy

• A type of atom

• A wave of electricity

Which theory explains that light behaves as both a wave and a particle?

• Newton’s Law

• Wave-particle duality

• Ohm’s Law

• Law of Reflection

What is the photoelectric effect?

• The bending of light as it passes through water

• The emission of electrons from a material when light shines on it

• The splitting of white light into colors

• The reflection of light from a mirror

Which property of light determines the energy of a photon?

• Intensity

• Frequency

• Speed

• Wavelength only

What is the equation for the energy of a photon?

Which scientist is most closely associated with explaining the photoelectric effect?

• Isaac Newton

• Albert Einstein

• Marie Curie

• Niels Bohr

What happens to the number of electrons emitted in the photoelectric effect if the intensity of light increases, but frequency stays the same?

• The number decreases

• The number increases

• The number stays the same

• No electrons are emitted

Which of the following best describes wave-particle duality?

• Light is only a wave

• Light is only a particle

• Light can behave as both a wave and a particle

• Light is neither a wave nor a particle

If the frequency of light is doubled, what happens to the energy of each photon?

• It is halved

• It stays the same

• It is doubled

• It is squared

Which of the following is an application of the photoelectric effect?

• Solar panels

• Magnifying glasses

• Rainbows

• Lenses in cameras