A photon, an electron and a uranium nucleus all have the same wavelength. The one with the most energy
Is the photon
Is the electron
Is the uranium nucleus
Depends upon the wavelength and the properties of the particle.
Match the column
$(A)$ Hallwachs $\&$ Lenard | $(P)$ Transformers |
$(B)$ Franck-Hertz | $(Q)$ Microwave |
$(C)$ Klystron valve | $(R)$ Quantization of energy levels |
$(D)$ Nicola Tesla | $(S)$ Photoelectric effect |
A source $S_1$ is producing, $10^{15}$ photons per second of wavelength $5000 \;\mathring A.$ Another source $S_2$ is producing $1.02 \times 10^{15}$ photons per second of wavelength $5100\;\mathring A$. Then, $($ power of $S_2)/$ $($ power of $S_1)$ is equal to
There are ${n_1}$ photons of frequency ${\gamma _1}$ in a beam of light. In an equally energetic beam, there are ${n_2}$ photons of frequency ${\gamma _2}$. Then the correct relation is
$(i)$ 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 ?