Question : Which of the following supports the particle nature of photons?
Option 1: Diffraction
Option 2: Polarisation
Option 3: Photoelectric effect
Option 4: Interference
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Correct Answer: Photoelectric effect
Solution : The correct answer is the Photoelectric effect.
In the photoelectric effect, when light shines on a material surface, it can eject electrons from that material. The key observation is that the intensity of light doesn't determine whether electrons are emitted but rather the frequency of the light. This phenomenon is best explained by considering light as discrete packets of energy or photons.
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