Bibhas (sometimes also called 'Vibhas') is a pentatonic raga belonging to the Bhairav Thaat.
In order to maintain the pure character of Bibhas, it is very important that Pa is not the last note during any alap or taan.
Related ragas: Rewa, Jait Behavior refers to practical aspects of the music.
It is complicated to talk about this for Hindustani music since many of the concepts are fluid, changing, or archaic.
Bhibaas was once sung in the Sangeet Varsha, which occurred on June 7, 2015, hosted by Svara Sangam.