For the production of characteristic $K_{\gamma}$ $X$-ray,the electron transition is:

$X$-rays of wavelength $\lambda = 1\,\mathring{A}$ have a frequency of:

When $0.50\; \mathring{A}$ $X$-rays strike a material,the photoelectrons from the $K$-shell are observed to move in a circle of radius $23\; mm$ in a magnetic field of $2 \times 10^{-2}\; T$ acting perpendicularly to the direction of emission of photoelectrons. The binding energy of $K$-shell electrons is $..........\; keV$.

In an $X-ray$ tube,when the accelerating voltage $V$ is halved,the difference between the wavelength of the $K_{\alpha}$ line and the minimum wavelength of the continuous $X-ray$ spectrum:

In an $X$-ray spectrum,if the wavelengths of $K_\alpha$,$K_\beta$,and $K_\gamma$ lines are $\lambda_\alpha$,$\lambda_\beta$,and $\lambda_\gamma$ respectively,then:

If the energy of an electron in the $K$-shell is $40000 \,eV$ and an accelerating potential of $60000 \,eV$ is applied across a Coolidge tube,which of the following $X$-rays will be obtained?