4.5.2 Wave-Particle Duality

• Particles with wave-like behavior exhibit interference and diffraction patterns
• Young's double-slit experiment demonstrates interference with light
• What happens when electrons pass through two narrow slits in electron diffraction?

  They create an interference pattern
• What is the process in the photoelectric effect?

  Emission of electrons by light
• What is the formula for the de Broglie wavelength?

  $\lambda =$$\frac{h}{p}$
• The wave-particle duality implies that all particles have a wavelength associated with them.


  True
• The wave-particle duality is a fundamental concept in classical physics.

  False
• In the photoelectric effect, light is absorbed as discrete energy packets called photons.
• Arrange the variables in the de Broglie equation based on their units:

  1️⃣ λ - Meters (m)

  2️⃣ h - Joules-seconds (Js)

  3️⃣ p - Kilogram-meters per second (kg m/s)

  4️⃣ m - Kilograms (kg)

  5️⃣ v - Meters per second (m/s)
• The Uncertainty Principle states that particles cannot have precisely defined position and momentum simultaneously.
• What is wave-particle duality?

  Particles exhibit wave-like properties
• What is measured when particles behave as waves?

  Wavelength and frequency
• What is tunneling in wave-particle duality?

  Passing through a potential barrier
• Light diffraction occurs when light waves bend around a sharp edge
• In Compton scattering, photons transfer energy and momentum to electrons
• Planck's constant is approximately 6.626 × 10⁻³⁴ Js.
• The wave-particle duality states that all particles exhibit both wave-like and particle-like properties.
• Match the wave behavior with its example:

  Interference ↔️ Young's double-slit experiment

  Diffraction ↔️ Light bending around a sharp edge

  Tunneling ↔️ Photons passing through a thin metal film
• Compton scattering demonstrates conservation of energy and momentum in photon-electron interactions.


  True
• The de Broglie equation extends the wave-particle duality to matter.
• Quantum mechanics describes the definite states and trajectories of particles.

  False
• Wave-particle duality implies that particles behave simultaneously as both a wave and a particle


  True
• Wave-particle duality challenged classical physics concepts

  True
• Wave-particle duality is a fundamental concept in classical mechanics

  False
• Waves exhibit particle-like behavior through the absorption of photons


  True
• The de Broglie equation implies that all moving particles have a wavelength associated with them


  True
• What is the formula for momentum?

  p = mv
• What is the behavior of particles described as wave-like?

  Interference and diffraction
• What is the photoelectric effect an example of?

  Particle-like behavior of waves
• Who conducted the Davisson-Germer experiment?

  Davisson and Germer
• Match the concept with its description:

  Wave-particle duality ↔️ Particles behave as both waves and particles

  Uncertainty Principle ↔️ Limits the accuracy of position and momentum measurements

  Double-slit experiment ↔️ Demonstrates wave-like interference of electrons