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

Options:

1. It shows that particles can only behave as waves.
2. It indicates that light and matter exhibit both wave-like and particle-like properties.
3. It proves that energy is quantized.
4. It suggests that particles can exist in multiple locations.

Correct Answer: It indicates that light and matter exhibit both wave-like and particle-like properties.

Solution:

Wave-particle duality is significant because it reveals that light and matter can exhibit both wave-like and particle-like properties, depending on the experimental conditions.