Question

state any two observations from every day life which shows that light travel in a straight line

Answer 1

Two observations which proves that light travels in straight path are as follows:
1. Formation of Shadow: shadows are formed when some light rays continue to travel in straight lines while other rays are stopped by an object.
2. Pin hole camera: Formation of image in pin hole camera

Answer 2

Answer:

1. Formation of shadow

2. Pin hole camera