1) What is sound? a) Energy b) Moment c) Speed 2) How string instruments work? a) on banging b) Plucking of string c) Air 3) High is amplitude-------------- sound a) soft b) Loud 4) High pitch sound will have ------------- oscillation. a) more b) less 5) Effects of noise pollution a) Headache b) Deafness c) High blood presuure d) All of the above

Physics

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