1.

Two boys stand close to a long straight metal pipe and at some distance from each other. One boy fires a gun and the other hears two explosions , with a time interval of one second between them. If the velocity of sound in metal is 3630 m `s^(-1)` and in air is 330 m`s^(-1)`, the distance between the two boys isA. 36.3 mB. 726 mC. 363 mD. 3630 m

Answer» Correct Answer - C
`(e)/(330)-(e)/(3630) =1`
`(3630 -330) e= 330 xx 3630 " or "e =(330xx3630)/(3300) m=363 m`


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