Question

Two mirrors are placed perpendicular to each other. A ray strikes the first mirror and after reflection from the first mirror it falls on the second mirror. The ray after reflection from second mirror will emerge
1)Perpendicular to the original ray 2) Parallel to the original ray
3) at 45° to the original ray 4) at 60° to the original ray

Answer 1

I don't know think it

plz follow me