Question

Write experiment to prove that light travels in a straight line?​

Answer 1

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.

Answer 2

Answer:

Take a pipe and a candle. Place the candle on a table and put the pipe in front of it. Look through the pipe and you will see the candlelight, though if you bend the pipe, you will be unable to see the light anymore. This proves that light travels in a straight line.