Question

Choose the correct statement:

• A. Photons of light show diffraction whereas electrons do not show diffraction.
• B. Electrons have momentum whereas photons do not have momentum.
• C. Photons of light and electrons both exhibit dual nature.
• D. All electromagnetic radiations do not have photons.

Hint:

Wave-particle duality is a core concept of quantum mechanics. Both matter (like electrons) and energy (like photons) can exhibit wave-like and particle-like properties.

Answer 1

The Correct Option is C

- Dual nature refers to the concept that particles exhibit both wave-like and particle-like properties.
- According to quantum theory, both photons (light quanta) and electrons can behave as particles and waves.
- Electron diffraction experiments clearly demonstrate the wave nature of electrons, while the photoelectric effect supports their particle nature.
- Similarly, photons show wave behavior (like interference and diffraction) and particle behavior (in photoelectric and Compton effects).
Let’s quickly refute the other options:
- (A) is incorrect because electrons do show diffraction.
- (B) is incorrect; both electrons and photons possess momentum: \( p = \frac{h}{\lambda} \) for photons.
- (D) is incorrect since all electromagnetic radiations consist of photons.
Final answer: Photons and electrons both exhibit dual nature.