Question

Observe the following diagram carefully and write down how it is explaining rectilinear
propagation of light.

Answer 1

We know that light travels in straight lines. This is called Rectilinear propagation of light. Now we see that the holes of the cardboard are kept in a straight line, hence we can see the candle flame. If the holes wouldn't be aligned straight then the candle flame could not be seen.

Hope this answer helps.

Mark me brainliest.

Answer 2

Answer:

Light travels in a straight line which is known as the rectilinear propagation of light.  Here in the image, we can see that the light of the candles can be seen in a straight line from the wholes in the cardboard a, b and c.  Hence, it concludes that the diagram explains rectilinear propagation of light as the light is travelling in a straight line.