Which of the following gives rise to the line spectra obtained from atoms?
Answer Details
The correct option is "Change of an electron from a higher to a lower energy level in the atom". Line spectra are the unique set of wavelengths of light that are emitted when electrons in an atom transition from a higher energy level to a lower energy level. When an electron absorbs a photon, it jumps to a higher energy level, and when it releases a photon, it jumps to a lower energy level. Since electrons can only exist in specific energy levels in an atom, each transition between these levels results in the emission of a photon of a specific wavelength. This gives rise to the characteristic line spectra that can be observed in experiments. The other options listed do not accurately describe the phenomenon of line spectra.