Compton effect supports that
$X$-rays are transverse waves
$X$-rays have high frequency compared to visible light
$X$-rays can easily penetrate matter
Photons have momentum
In a dark room of photography, generally red light is used. The reason is
The momentum of a photon of energy $1\,\, MeV$ in $kg \,\,m/s$ will be
According to photon theory of light which of the following physical quantities associated with a photon do not/does not change as it collides with an electron in vacuum
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
A $5$ watt source emits monochromatic light of wavelength $5000\; \mathring A$. When placed $0.5\; m$ away, it liberates photoelectrons from a photosensitive metallic surface. When the source is moved to a distance of $1.0\;m$, the number of photo electrons liberated will