how will you prove that light travels in a straight line
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5
Answer:
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Explanation:
Shadows are evidence of light travelling in straight lines. An object blocks light so that it can't reach the surface where we see the shadow.
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4
Explanation:
Take three CD’s and align them together. Align them in such a way that all the CD’s line in a straight line. Now take a candle and place it at the other end. Do make sure that the tip of the candle and the holes of the CD’s all lie in the straight line. Ensure that the height of the CD’s and the tip of the candle are same. Observe the flame of the candle. We are able to see the flame of the candle because the light wave travels through the holes and reaches our eye.
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