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1900's Physics and Wave

Energy of pho...

Question

Energy of photoelectrons is independent of the _ of incident radiation.

A. Wavelength

B. Wavenumber

C. Frequency

D intensity

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Solution

D)intensity
Kinetic energy of Electrons doesn't depends on Intensity whereas it depends on frequency of photons,once the threshold or cut-off frequency is crossed electron jumps out of metal with certain Kinetic energy. Higher the frequency of photons higher is the Kinetic Energy.
Hence Kinetic Energy of Electrons is independent of Intensity of Light in Photoelectric effect!

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1900's Physics and Wave

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