Electrons are emitted when uv ray is incident on a metal surface but it ray cannot emit. Will radiowaves emits electrons and why?
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Explanation:
Order of frequency-
x-rays > ultraviolet rays > visible light rays > infrared rays > radio waves
So, it ultraviolet rays were not able to emit electrons. So, visible light rays, infrared rays and radio waves cannot emit electrons due to less energy of these rays. But x-rays have energy greater than ultraviolet rays so, it may emit photons.
Energy =hν
where, ν is frequency of incident light.
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