The potential difference applied to an $X$-ray tube is $5 \ KV$ and the current through it is $6.4 \ mA$. The number of electrons striking the target per second is:

The order of voltage applied across the ends of an $X$-ray tube is ...... $V$.

$X$-rays can be used to study crystal structure if the wavelength lies in the range:

The diagram shows a graph between the intensity of $X$-rays emitted by a molybdenum target and the wavelength,when electrons of $30 \ keV$ are incident on the target. In the graph,one peak corresponds to the $K_\alpha$ line and the other peak corresponds to the $K_\beta$ line.

An electron having de-Broglie wavelength $\lambda$ is incident on a target in an $X$-ray tube. The cut-off wavelength of the emitted $X$-ray is:

$X$-rays are produced in an $X$-ray tube operating at a given accelerating voltage. The wavelength of the continuous $X$-rays has values from