Interpretation:
The phenomena that can be explained only by the particle model of light needs to be explained.
Concept introduction:
In 1905 to explain

Answer to Problem 9SSC
Photo electric effect states the particle model of light.
Explanation of Solution
According to photo electric effect the light moves in the form of packets of energy, called photons. On the basis of quantum nature of light this effect is explained. Hence, it is obvious that the particles's nature of light is explained by photoelectric effect. The photoelectric effect arises when a certain
Photoelectric effect cannot describe the wave origin of light.
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Chemistry: Matter and Change
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