Question

State any two observation from everyday life to show that light travels in straight lines

Answer 1

Answer:

1. The beams of light from the headlights of car, scooter, buses, trucks, aeroplanes, and engines of train go straight in the darkness of night showing that light travels in a straight line path.
2. The straight beams of light coming out from the searchlights of airport tower tell us that light travels in a straight line path.

Hope it helps :)

Answer 2

Answer:

Two experiments are used to demonstrate how light travels in straight lines.

In the first example, the presenter arranges three pieces of card, with holes in, in an uneven line. The light stops and cannot travel through all three cards. When she arranges the holes in a straight line, the light can travel through.

In the second example, a light source is shone onto a shiny and uneven surface. We see how the light still travels in a straight line, but scatters and reflects in different directions.