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Write an activity which shows the light travel in straight line

Posted by Reena Gupta 7 years ago

CBSE > Class 06 > Science (OLD)

2 answers

Geetanand Yadav 7 years ago

Light travels in a straight line because you can see in the chapter light shadow and Reflection that you should you should first take a rubber tube stretch it straight electro it at a flame of candle with one eye keeping the other I close see in figure if we will find that when the rubber tube is straight we can see the light of candle flame throw it now when the rubber tube a little and look it at the candle flame again see figure B we cannot see the light of candle flame thrower band rubber tube this means that the light of candle flame can travel through the hole of straight rubber to but not throw the band rubber tube from this observation we can conclude that light travels in straight line

1Thank You

Yogita Ingle 7 years ago

Fix a lighted candle on a table. Take a rubber tube, stretch it straight and look through it at the flame of the candle with one eye (keeping the other eye closed) [see Figure (a)]. We will find that when the rubber tube is straight, we can see the light of candle flame through it.

Now, bend the rubber tube a little and look through it at the candle flame again [see Figure (b)]. We cannot see the light of candle flame through a bent rubber tube. This means that the light of candle flame can travel through the hole of straight rubber tube but not through the bent rubber tube. From this observation we conclude that light travels in a straight line.