Halo-Cathode Lamp generally used for

Solution (By Examveda Team)

A hollow-cathode lamp (HCL) is the type of cold cathode lamp used in Physics and chemistry as a spectral line source. It is generally used for AAS i.e. Atomic Absorption Spectrometers.
An HCL consists of a glass tube containing a cathode, an anode and a buffer gas usually a noble gas.