In an experiment for measuring sped of soung (v) in air by resonance tube method, a tuning fork of frequency 520 Hz is used. Successive resonant lenghts of the air column are observed at `l_(1)=40` cm and `l_(2)=70cm` the value of v (in `ms^(-1)`) is equal to......

Answer

312

Explanation

Given frequency of tuning for
`=520 Hz`
Resonance length `l_(1)=40` and `l_(2)=70cm` speed of sound `v_("air")`
`=2v(l_(2)-l_(1))`
`=2xx520xx(70-40)xx10^(-2)`
`1040xx30xx10^(-2)`
`=312ms^(-1)`