The rest mass of the photon is
$0$
$\infty $
Between $0$ and $\infty $
Equal to that of an electron
Energy conversion in a photoelectric cell takes place from
In a dark room of photography, generally red light is used. The reason is
Assertion : The energy $(E)$ and momentum $(p)$ of a photon are related by $p = E/c$.
Reason : The photon behaves like a particle.
If the two metals $A$ and $B$ are exposed to radiation of wavelength $350\,nm$. The work functions of metals $A$ and $B$ are $4.8\,eV$ and $2.2\,eV$. Then choose the correct option