List of top Physics Questions on Atomic Physics asked in CPET

The light emitted in the transition \(n = 3\) to \(n = 2\) in hydrogen is called \(H_\alpha\) light. The maximum work function a metal can have so that \(H_\alpha\) light can emit photoelectrons from it is:

If \(r_p\) and \(r_H\) are the radius and \(E_p\) and \(E_H\) are the energy of an electron in the \(n\) orbit of positronium atom and hydrogen atom, respectively, then:

An atomic transition line with a wavelength of 350 nm is observed to be split into three components in a spectrum of light from a sunspot. Adjacent components are separated by 1.7 pm. The strength of the magnetic field in the sunspot is: