Two tuning forks A and B are sounded together | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) The initial beat frequency is $f_{beat} = |n_A - n_B| = 4 \,Hz$.Given $n_A = 320 \,Hz$,the possible frequencies for $B$ are $n_B = 320 \pm 4$,whic

Vedclass · Accepted Answer

$324$

Vedclass · Answer

(C) The initial beat frequency is $f_{beat} = |n_A - n_B| = 4 \,Hz$.Given $n_A = 320 \,Hz$,the possible frequencies for $B$ are $n_B = 320 \pm 4$,which are $324 \,Hz$ or $316 \,Hz$.When a tuning fork is loaded with wax,its frequency decreases.If $n_B$ was $316 \,Hz$,loading it would decrease the frequency further away from $320 \,Hz$,increasing the beat frequency (e.g.,to $5$ or $6 \,Hz$).If $n_B$ was $324 \,Hz$,loading it would decrease the frequency towards $320 \,Hz$,which would decrease the beat frequency. However,the problem states the beat frequency remains $4 \,Hz$. This implies the frequency was $324 \,Hz$ and it decreased to a value where the beat frequency is still $4 \,Hz$ (or the question implies the initial state). Given the options,$324 \,Hz$ is the correct frequency for $B$.

Two tuning forks $A$ and $B$ are sounded together and produce $4$ beats per second. The frequency of tuning fork $A$ is $320 \,Hz$. When tuning fork $B$ is loaded with wax,the number of beats per second remains $4$. What is the frequency of tuning fork $B$ in $Hz$?

Similar Questions

The frequency of a tuning fork is $256 \, Hz$. The velocity of sound in air is $344 \, ms^{-1}$. The distance travelled (in $meters$) by the sound during the time in which the tuning fork completes $32$ vibrations is

Two sound sources,when sounded simultaneously,produce four beats in $0.25 \ s$. The difference in their frequencies must be: (in $Hz$)

Two tuning forks $A$ and $B$ sounded together give $6$ beats per second. With an air resonance tube closed at one end,the two forks give resonance when the two air columns are $24 \, cm$ and $25 \, cm$ respectively. Calculate the frequencies of the forks.

Two tuning forks $A$ and $B$ produce $4$ beats per second. The frequency of $A$ is $256 \ Hz$. On loading $B$ slightly,the beat frequency becomes $5$ beats in $2$ seconds. The frequency of $B$ after loading is .... $Hz$

The beats are produced by two sound sources of same amplitude and of nearly equal frequencies. The maximum intensity of beats will be ...... that of one source.

Vedclass Test Series

Exam Paper Generator

Online Exam Module