List of top Physics Questions on Nuclear physics asked in CPET

The wavelengths of \(K_\alpha\) and \(L_\alpha\) X-rays of a material are 21.3 pm and 141 pm, respectively. Then, the wavelength of the \(K_\beta\) X-ray of the material is given by:

The cut-off wavelength for the continuous X-rays coming from an X-ray tube operating at 30 kV is:

In a gamma decay process, the internal energy of the nucleus of mass \(M\) decreases, a gamma photon of energy \(E\) and linear momentum \(\dfrac{E}{c}\) is emitted, and the nucleus recoils. The decrease of internal energy is:

Which one of the following is an example of doubly magic nuclei?

An X-ray beam of wavelength \(0.16\ \text{nm}\) is incident on a set of planes of a certain crystal. The first Bragg reflection is observed for an incidence angle of \(30^\circ\). What is the corresponding interplanar spacing?