Question: What is the significance of the wave-particle duality in quantum mechanics?

Options:

1. Particles can only behave as waves.
2. Waves can only behave as particles.
3. Particles exhibit both wave-like and particle-like properties.
4. There is no duality; they are separate phenomena.

Correct Answer: Particles exhibit both wave-like and particle-like properties.

Solution:

Wave-particle duality is a fundamental concept in quantum mechanics that states that every particle or quantum entity can be described as either a particle or a wave, depending on the experimental conditions.