When cathode rays (tube voltage $\sim 10 \ kV$) collide with the anode of high atomic weight,then we get:

The essential distinction between $X$-rays and $\gamma$-rays is that

At the time of a total solar eclipse,the spectrum of solar radiation would be:

When $X$-rays from a Coolidge tube pass through an aluminum foil of thickness $0.3 \, mm$,$50\%$ of the $X$-rays are transmitted. If the potential difference between the target and the cathode is increased,the fraction of $X$-rays transmitted through the same foil will be .......

Find the ratio of the energy of an $X$-ray photon with a wavelength of $1 \mathring A$ to the energy of a visible light photon with a wavelength of $5000 \mathring A$.

For the structural analysis of crystals, $X-$ rays are used because