Understanding Light: Wave-Particle Duality

What was the main limitation of explaining light solely as a wave?

• It did not account for light's speed.

• It ignored the color spectrum.

• It could not explain the photoelectric effect.

• It was not supported by Maxwell's equations.

What did Max Planck propose about the nature of light?

• Light is unaffected by gravity.

• Light travels faster than sound.

• Light consists of continuous waves.

• Light is made up of quantized packets of energy.

How did Planck describe the relationship between energy and frequency?

• Energy is inversely proportional to frequency.

• Energy is directly proportional to frequency.

• Energy is unrelated to frequency.

• Energy is proportional to the square of frequency.

What does it mean for energy to be quantized?

• Energy is unpredictable.

• Energy is distributed in discrete amounts.

• Energy is always increasing.

• Energy is continuous and smooth.

Which analogy was used to explain quantization?

• A ladder with rungs

• A flowing river

• A continuous line

• A spinning wheel

What is Planck's constant used for?

• To measure the speed of light

• To find the mass of a photon

• To calculate the energy of a photon

• To determine the color of light

What did Einstein demonstrate about photons in the photoelectric effect?

• Photons have a constant mass.

• Photons can behave like particles.

• Photons are unaffected by frequency.

• Photons are always at rest.

How did Einstein's work support the idea of light as a particle?

• By demonstrating light's speed is constant

• By proving light travels in waves

• By showing light is unaffected by gravity

• By showing photons have mass when energized

What happens to photons at high frequencies and short wavelengths?

• They become invisible.

• They exhibit wave-like properties.

• They lose energy.

• They gain mass and show particle-like properties.

What is the resting mass of a photon?

• Variable

• Zero

• Infinite

• One