4. You cannot see the flame of a burning candle by looking through a bent pipe. This is because___. *
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Explanation:
Because light travels in a straight line not in a bent line that is why we cant see the candle flame through a bent pipe. This activity proves that light travels in a straight line and this movement is known as rectilinear propagation of light.
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6
Answer:
Light travels in a st line.
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