Question

when green light is incident on a certain metal surface electrons are emitted but no electrons are emitted by yellow. if red light is incident on the same metal surface then what happened ​

Answer 1

❤gm ❤

no electron will be emitted .

:- for photoelectrons wavelength of incident light must be less than the threshold wavelength sings wavelength of red light is greater than the wavelength of green light So no photoelectron will be emitted .

Answer 2

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★→ In VIBGYOR while going from left to Right Frequency decreases and wavelength increases.

i.e order of wavelength of

Green light< Yellow light < Red light

→ For emission of electron to takes place , the frequency of incident light is required to be greater then certain minimum value.

→ as threshold frequency of red light and yellow llight is less than that of green light , no emission of electron takes place.

happy to help!!

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