Question

With the help of an experiment,show that light travels in straight lines.

Answer 1

Answer:

Explanation:take three wooden pieces which are equal in size.Make holes equally at the centre of the wooden pieces.Take a candle put near the holes equal to them.Make sure that you make this experiment in a dark room without any source of light. You can see that light will fall staightly on the wall

Answer 2

Answer:

1. Get three cardboards with a hole at the center and mount them

2. Arrange them such that they form a straight line and place a lighted candle at one end

3. The flame could be seen from the other end.

4. Move any of the cardboards and observe what happens.

Observation:

The flame could be seen when the boards were in a straight line, but not when one was displaced slightly

Precaution:

Make sure this is done in a dark room