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Please take note : for that sound question, I have mentioned the speed as 320m/s in the question. however, some of you have taken it as 332m/s, and I have marked you accordingly. Please don't assume any other value for the speed of sound. This is because people might say later on that they took some value of c and hence got the answer they mailed. So in case you have taken any other value for speed of sound, please change it to 320m/s, and send in the answers. (if people have sent in the answers with c=332m/s, its okay)
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Moderation Team
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