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Why wave theory of light is …

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Why wave theory of light is not able to explain the observed features in photoelectric effect???
  • 3 answers

Arnav Kandari 5 years, 7 months ago

Uff Itne bade bade answers ??

Yogita Ingle 5 years, 7 months ago

Photoelectric effect cannot be explained acoording to wave theory because of follwoing reasons:
1. According to wave theory, after the light falls on a substance electrons are emitted after a small instant of time. However, in photoelectric effect, the electron emissions are immediate without a time delay.
2. The energy of a wave increases with increase in intensity. However, in photoelectirc effect, increase in intensity has no effect on the energy of electrons emitted. All that happens is the number of electrons emitted, increases.

Ďãřşháñăã Yadav ? ? ? 5 years, 7 months ago

becoz it can't explain (i) the instantaneous ejection of photoelectron . (ii) the existence of threshold frequency for a metal surface. (iii) the fact that K. E of emitted electron is independent of the intensity of light and depend upon its frequency.
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