What is consciousness: physical or non-physical?

The following is an excerpt from a samvaad (dialogue) session with Acharya Prashant.

Questioner : Acharya Ji, whenever you have been asked what is consciousness, you have simply said that, “All that is mind, mind-stuff is consciousness.” The question that’s not relevant personally to me but still l thought like– ‘Material stuff is visible, it can be touched, so that is one thing…