Question

green light ejects photoelectrons from a given photosensitive whereas yellow light doesnot.what will happen in case of violet and red ligt?give reason

Answer 1

The electrons will eject in case of violet and not red because in case of VIBGYOR the frequency decreases in the Same order and the required frequency is in between green and yellow. So violet being greater than green ejects electrons

Answer 2

Explanation:

• In case of green light photo electrons are ejected while in case of yellow light they are not because the wavelength of green light is less than that of yellow light.
• Hence they are able to provide the energy that is required by electrons to move out from the valence band to conduction band.
• When the light that is incident it is red then there will be no ejection of electrons because the wavelength of this light is even greater than that of yellow light,
• While in case of violet light the wavelength being smaller than that of green light there will be ejection of electrons.

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Green light ejects photoelectrons from a given photosensitive surface whereas yellow light doeß not. What will happen in the case of violet and red light

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