Physics, asked by nagsanghita5171, 1 year ago

a whistle whose air column is open at both ends has a fundamental frequency of 5100 Hz. if the speed of sound in air is 340 m/s, the length of the whistle , in cm , is :

Answers

Answered by 7878

The length of Whistle is 15 cm Maybe it can be incorrect

nagsanghita5171: i don't knw........actually ..........

7878: OK no problem

nagsanghita5171: hm

nagsanghita5171: yaha 1 hints he...........

nagsanghita5171: f=v/2l ; l= v/ 2f

nagsanghita5171: can u now explain it to me.............

7878: Here in the formula f=v/2l, f is frequency ,l is the length and v is the velocity of sound

nagsanghita5171: apne konsa formula use kia tha ?

7878: Velocity=frequency*Lambda(Wavelength)

nagsanghita5171: ha mene v ese kia tha...........bt mene kavi wo formula use nei kia to problem ho rehi he samajhme nei a raha k uss se kiu nei hoga .........

Answered by AcharyaVII

Wavelength of the whistle= $\frac{frequency}{2*speed}$
= $\frac{5100}{68}$ m
=75 m
=7500 cm
Ans:7500 cm.

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