Show that when a string fixed at its two ends vibrates in 1 loop , 2 loop, 3 loops and 4 loops , the frequencies are in the ratio 1:2:3:4

why is it difficult to prepare a medicine against viruses then bacteria
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Hey mate, your answer is in the attachment.....

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You can refer to Abhay's answer as he is absolutely correct.
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What are you looking for?