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 is

Options

A. 36.3 m
B. 726 m
C. 363 m
D. 3630 m

Answer

C

Explanation

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