Question

Which phenomenon best supports the theory that matter has a wave nature?

• A. Electron momentum
• B. Electron diffraction
• C. Photon momentum
• D. Photon diffraction

Hint:

Davisson--Germer experiment showed electron diffraction, confirming de Broglie’s wave nature of matter.

Answer 1

The Correct Option is B

Step 1: Identify what proves wave nature.
Wave nature is directly confirmed when a particle shows phenomena like diffraction or interference, which are purely wave effects.
Step 2: Apply to matter particles.
Electrons are matter particles. When electrons show diffraction (as in Davisson--Germer experiment), it proves electrons behave like waves.
Step 3: Eliminate other options.
Momentum is a particle property, not proof of wave nature. Photon diffraction proves wave nature of light, not matter.
Step 4: Final conclusion.
Hence, electron diffraction best supports wave nature of matter.
Final Answer:
\[ \boxed{\text{(B) Electron diffraction}} \]