Which phenomenon demonstrates the particle nature of light?

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Question: Which phenomenon demonstrates the particle nature of light?

Options:

Correct Answer: Photoelectric effect

Solution:

The photoelectric effect demonstrates the particle nature of light as it involves photons colliding with electrons.

Which phenomenon demonstrates the particle nature of light?

Which phenomenon demonstrates the particle nature of light?

Step 1: Understand that light can behave like a particle. This means it can be thought of as tiny packets of energy called photons.
Step 2: Learn about the photoelectric effect. This is when light hits a metal surface and causes electrons to be ejected from that surface.
Step 3: Realize that for the photoelectric effect to happen, light must have enough energy. This energy comes from the photons.
Step 4: Notice that if light were only a wave, it would not be able to knock out electrons in the way it does. The particle nature of light explains why some light can cause this effect while other light cannot.
Step 5: Conclude that the photoelectric effect shows that light has a particle nature because it involves photons colliding with electrons.

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