The range of wavelength for $X$-rays is from . . . . . . .

The shortest wavelength of $X$-rays emitted from an $X$-ray tube depends on the

When the atomic number of the first target is $Z_1 = 64$ and the atomic number of the second target is $Z_2 = 80$,the approximate ratio of the wavelengths of the $K_{\alpha,1}$ and $K_{\alpha,2}$ radiations is .......

Consider the following two statements $A$ and $B$ and identify the correct choice in the given answer.
$A:$ The characteristic $X-$ray spectrum depends on the nature of the material of the target.
$B:$ The short wavelength limit of the continuous $X-$ray spectrum varies inversely with the potential difference applied to the $X-$ray tube.

For hard $X$-rays,which of the following is true?

The wavelength of the $K_{\alpha}$ $X$-ray produced by an $X$-ray tube is $0.76 \ \mathring{A}$. The atomic number of the anode material is ...