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Question
Explain why, the flash of lightning reaches us first and the sound of thunder is heard a little later.
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Solution
Since light travels faster than sound, the flash of lightning is seen first and the sound of thunder is heard thereafter.
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RELATED QUESTIONS
When a sound is reflected from a distant object, an echo is produced. Let the distance between the reflecting surface and the source of sound production remains the same. Do you hear echo sound on a hotter day?
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An echo is simply a ................... sound.
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Speed of sound in oxygen: 340 ms-1
Speed of sound in benzene: 200 ms-1
