What is photoelectron ?
What is photoelectron ?
When clean metal surface is irradiated with radiation of sufficiently high frequency, electrons are emitted from metal surface. This phenomena is called photoelectric effect.
Similar Questions
If $2.5 \times 10^{-6\,} N$ average force is exerted by a light wave on a non-reflecting surface of $30\, cm ^{2}$ area during $40$ minutes of time span, the energy flux of light just before it falls on the surface is .................. $W / cm ^{2}$
(Round off to the Nearest Integer)
(Assume complete absorption and normal incidence conditions are there)
If $2.5 \times 10^{-6\,} N$ average force is exerted by a light wave on a non-reflecting surface of $30\, cm ^{2}$ area during $40$ minutes of time span, the energy flux of light just before it falls on the surface is .................. $W / cm ^{2}$
(Round off to the Nearest Integer)
(Assume complete absorption and normal incidence conditions are there)
- [JEE MAIN 2021]
Wavelength of a $1 \;keV$ photon is $1.24 \times {10^{ - 9}}\;m$. What is the frequency of $1 \;MeV$ photon
Wavelength of a $1 \;keV$ photon is $1.24 \times {10^{ - 9}}\;m$. What is the frequency of $1 \;MeV$ photon
- [AIPMT 1991]
Compton effect supports that
Compton effect supports that
In photoelectric effect if the intensity of light is doubled then maximum kinetic energy of photoelectrons will become
In photoelectric effect if the intensity of light is doubled then maximum kinetic energy of photoelectrons will become
Energy of a quanta of frequency ${10^{15}}Hz$ and $h = 6.6 \times {10^{ - 34}}J{\rm{ - }}\sec $ will be
Energy of a quanta of frequency ${10^{15}}Hz$ and $h = 6.6 \times {10^{ - 34}}J{\rm{ - }}\sec $ will be