A draw and describe card board experiment
Answers
Answer:
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Explanation:
RECTILINEAR PROPERTY OF LIGHT
1)According to FERMAT'S PRINCIPLE,
light takes the path that takes the minimum time to traverse.
2)Generally light chooses the straight path which is the shortest path connecting any two points according to euclidean geometry.
Experiment
1)Take one candle and 3 cardboards for the experiment
2)Then place them in a line as shown in the attachment.
3)Make 3 holes in cardboard such that the holes are in same line with the candle as in the attachment shown above.
4)Light up the candle and see the light thought the holes. You will see that it is coming in a straight line and is clearly visible.
5)Then move any one of the cardboard slightly from it's postition and then you will see that you can't observe the light that was earlier visible as the 3 holes were not in straight line now.
THIS PROVES LINE TRAVELS IN A STRAIGHT LINE.
i hope this is the answer
Answer:
We take three pieces of cardboard. Place them one on the top of one another and make a hole in the middle of each cardboard by using a thick nail. Erect these cards up on the table at a short distance away from each other.
Take a candle which is of the same height as the holes in the cards. Light the candle and place it in front of the cards. We see that the light of the candle is visible only when the holes on cards lie in a straight line.
If we disturb them the light of the candle disappears. This experiment shows that light propagates in a straight line.
Explanation: