Interpretation:
Two evidences each for the wave and particle nature of light are to be determined.
Concept introduction:
Light is
The wavelength of an electromagnetic wave is defined as the distance between two troughs or two crests.
The frequency of an electromagnetic wave is defined as the total number of waves that pass through a particular point in a second.
The amplitude of an electromagnetic wave is defined as the height of the crest or the depth of the trough. The square of the amplitude is directly proportional to the intensity of the wave.
The particle nature of light is due to light being a stream of energy packets called photons.
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