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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A narrow pulse (for example, a short pip by a whistle ) is sent across a medium. If the pulse rate is 1 after energy 20 s (that is the whistle is blown for a split of second after every 20 s),

A narrow pulse (for example, a short pip by a whistle ) is sent across a medium. If the pulse rate is 1 after energy 20 s (that is the whistle is blown for a split of second after every 20 s),

A narrow pulse (for example a short pip by a whistle ) is sent across a medium. If the pulse rate is 1 after energy 20 s (that is the whistle is blown for a split of second after every 20 s)