@@Aryanthakur-yt9bc Bears usually percieve human beings as threats. If a bear percieves you as a threat its first response is always to charge and maul you. Unless you're carrying a gun there isn't much you can do about it.
I am a wild life biologist currently working in srinagar kashmir wildlife sanctuary, i often come across brown bears,they are extremely agreesive specially if it is a femal with cubs and i would suggest that you should maintain distance of 500 m or more from them since they are extremly fast and agile.