Do all the electrons that absorb a photon come out as photoelectrons ?
Do all the electrons that absorb a photon come out as photoelectrons ?
No. only those electrons are emitted which absorb energy from incident photons, more than their binding energy.
Similar Questions
A photon, an electron and a uranium nucleus all have the same wavelength. The one with the most energy
A photon, an electron and a uranium nucleus all have the same wavelength. The one with the most energy
There are materials which absorb photons of shorter wavelength and emit photons of longer wavelength. Can there be stable substances which absorb photons of larger wavelength and emit light of shorter wavelength.
There are materials which absorb photons of shorter wavelength and emit photons of longer wavelength. Can there be stable substances which absorb photons of larger wavelength and emit light of shorter wavelength.
Two sources of light emit with a power of $200 \mathrm{~W}$. The ratio of number of photons of visible light emitted by each source having wavelengths $300\ \mathrm{nm}$ and $500 \mathrm{~nm}$ respectively, will be :
Two sources of light emit with a power of $200 \mathrm{~W}$. The ratio of number of photons of visible light emitted by each source having wavelengths $300\ \mathrm{nm}$ and $500 \mathrm{~nm}$ respectively, will be :
- [JEE MAIN 2024]
The momentum of a photon is $2 \times {10^{ - 16}}gm-cm/sec$. Its energy is
The momentum of a photon is $2 \times {10^{ - 16}}gm-cm/sec$. Its energy is
Rest mass energy of an electron is $0.51\ MeV.$ If this electron is moving with a velocity $0.8\ c$ (where $c$ is velocity of light in vacuum), then kinetic energy of the electron should be. ........... $MeV$
Rest mass energy of an electron is $0.51\ MeV.$ If this electron is moving with a velocity $0.8\ c$ (where $c$ is velocity of light in vacuum), then kinetic energy of the electron should be. ........... $MeV$