5.5 Wave-Particle Duality

Select all that apply. The principle of complementarity tells us that in order to understand a specific experiment, we need to think of light as

• a wave only

• a particle only

• both a wave and a particle

• neither a way nor a particle

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Wave-particle duality tells us that light

• is a wave

• is a particle

• can act like both a wave and a particle

• acts as neither a wave nor a particle

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The de Broglie wavelength suggests that

• any matter with mass can also act like waves

• any matter with mass can also act like particles

• light is a wave

• light is a particle

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What is the de Broglie wavelength of a 5.5 kg canon ball travelling at 172 m/s?

• 7.0 * 10^-24 m

• 7.0 * 10^-29 m

• 5.8 * 10^-35 m

• 7.0 * 10^-37 m

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Why don't we notice matter acting like waves in everyday life?

• their de Broglie wavelengths are too large to notice

• their de Broglie wavelengths are too small to notice

• matter is not a wave

• matter is made of particles

Quantum mechanics is

• the mathematical interpretation of how matter is composed and behaves based on the wave nature of particles

• the qualitative interpretation of how matter is composed and behaves based on religion

• the mathematical interpretation of how matter is composed and behaves based on the particle nature of matter

• the mathematical interpretation of how matter is composed and behaves based on counting

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Select all that apply. Electron microscopes employ the following concepts to significantly enhance magnification of images:

• quantum mechanics

• gravitation

• genetics

• matter waves

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Select all that apply.

• When light travels, its behavior is best described as a particle.

• When light travels, its behavior is best described as a wave.

• When light interacts with matter, its behavior is best described as a particle.

• When light interacts with matter, its behavior is best described as a wave.

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