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Why violet light eject electrons from certain photosensitive metal and red light does not?

Why violet light eject electrons from certain photosensitive metal and red light does not?

Will violet and red light eject electrons from the same surfac? As frequency of violet light is more that of blue light, hence violet light will eject photoelectrons. But the frequency of red light being less than the blue light, can not eject photoelectron from the given surface.

Why does violet light cause photoemission of electrons but orange light does not?

In sodium metal, violet light causes the photoelectric effect but red light does not because photons of violet light have LESS energy than those of red light. In the photoelectric effect, PROTONS are ejected from the surface of a metal when light shines on it.

Which light is used in photoelectric effect eject photoelectrons?

Green light does eject photoelectrons (even if it is very dim). Blue light ejects photoelectrons with more energy than green light (even if it is very dim).

Will brighter light eject more electrons from a photosensitive surface than dimmer light of the same frequency?

Will brighter light eject more electrons from a photosensitive surface than a dimmer light if the same frequency? Yes. Bright light contains more photons. So with more photons hitting the metal surface, more electrons will be emitted.

What happens when blue light shines on a piece of metal?

Transcribed image text: When blue light shines on a piece of metal, electrons are ejected from the metal. More electrons are ejected because each UV photon has enough energy to eject more than one electron from the metal.

Does orange light eject electrons?

Since the frequency of orange light is less than the frequency of yellow light, therefore it will not be able to eject photoelectrons from the metal’s surface. The frequency of green light is more than the frequency of yellow light.

Why can the blue light release the electron but red light can’t it’s all about the energy not the intensity?

Red light had photons with too little energy to dislodge an electron from its atom. But blue or violet light had photons with quanta large enough to knock the metal electrons into outer space. It all depended on the quantity of energy carried by photon.

Why does blue light emit faster electrons than red light from metal surfaces in photoelectric effect?

Low frequency light (red) is unable to cause ejection of electrons from the metal surface. At or above the threshold frequency (green) electrons are ejected. Even higher frequency incoming light (blue) causes ejection of the same number of electrons but with greater speed.

How does wavelength affect photoelectric effect?

In the photoelectric effect light which strikes a metal causes electrons to be emitted. As the wavelength decreases for a specified metal, the speed (and thus the Kinetic Energy) of the emitted electrons increases.

When comparing a beam of blue light to a beam of red light the blue light has?

This diagram shows the relative wavelengths of blue light and red light waves. Blue light has shorter waves, with wavelengths between about 450 and 495 nanometers. Red light has longer waves, with wavelengths around 620 to 750 nm. Blue light has a higher frequency and carries more energy than red light.

How does the brightness of the light emitted by the source affect the electrons that are emitted?

Light of any frequency will cause electrons to be emitted. The more intense the light the more kinetic energy the emitted electrons will have.

When dim blue light shines on a piece of metal electrons are ejected from its surface?

Fewer electrons are ejected because it takes multiple UV photons to eject one electron from the metal. The same number of electrons are ejected because both blue light and UV light are above the threshold frequency for the metal. No electrons are ejected from the metal because UV light is below the threshold frequency.