Which of the following statement is not correct
Which of the following statement is not correct
- A
Photographic plates are sensitive to infrared rays
- B
Photographic plates are sensitive to ultraviolet rays
- C
Infra-red rays are invisible but can cast shadows like visible light
- D
Infrared photons have more energy than photons of visible light
Similar Questions
Photon and electron are given same energy $({10^{ - 20}}J)$. Wavelength associated with photon and electron are ${\lambda _{Ph}}$ and ${\lambda _{el}}$ then correct statement will be
Photon and electron are given same energy $({10^{ - 20}}J)$. Wavelength associated with photon and electron are ${\lambda _{Ph}}$ and ${\lambda _{el}}$ then correct statement will be
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
$(i)$ In the explanation of photoelectric effect, we assume one photon of frequency v collides with an electron and transfers its energy. This leads to the equation for the maximum energy Emax of the emitted electron as $E_{max} = hf - \phi _0$ (where $\phi _0$ where do is the work function of the metal. If an electron absorbs $2$ photons (each of frequency $v$) what will be the maximum energy for the emitted electron ?
$(ii)$ Why is this fact (two photon absorption) not taken into consideration in our discussion of the stopping potential ?
$(i)$ In the explanation of photoelectric effect, we assume one photon of frequency v collides with an electron and transfers its energy. This leads to the equation for the maximum energy Emax of the emitted electron as $E_{max} = hf - \phi _0$ (where $\phi _0$ where do is the work function of the metal. If an electron absorbs $2$ photons (each of frequency $v$) what will be the maximum energy for the emitted electron ?
$(ii)$ Why is this fact (two photon absorption) not taken into consideration in our discussion of the stopping potential ?
The rest mass of the photon is
The rest mass of the photon is
If the energy of the photon is increased by a factor of $4$, then its momentum
If the energy of the photon is increased by a factor of $4$, then its momentum