Length of a sonometer wire tuned to a frequency of 250 Hz is 0.60 metre. frequency of tuning fork wi

English

Gujarati

Hindi

14.Waves and Sound

easy

The length of a sonometer wire tuned to a frequency of $250 Hz$ is $0.60$ metre. The frequency of tuning fork with which the vibrating wire will be in tune when the length is made $0.40$ metre is .... $Hz$

A

$250$

B

$375$

C

$256 $

D

$384$

Solution

(b) ${n_1}{l_1} = {n_2}{l_2} \Rightarrow 250 \times 0.6 = {n_2} \times 0.4 \Rightarrow {n_2} = 375$

$ \Rightarrow {n_2} = 375\,Hz$

Standard 11

Physics

Share

Similar Questions

The first overtone of a stretched wire of given length is $320 Hz$. The first harmonic is …. $Hz$

easy

A string is fixed at both ends vibrates in a resonant mode with a separation $2.0 \,\,cm$ between the consecutive nodes. For the next higher resonant frequency, this separation is reduced to $1.6\,\, cm$. The length of the string is …. $cm$

hard

Two similar sonometer wires given fundamental frequencies of $500Hz$. These have same tensions. By what amount the tension be increased in one wire so that the two wires produce $5$ beats/sec …. $\%$

easy

A string under a tension of $129.6\,\, N$ produces $10\,\, beats /sec$ when it is vibrated along with a tuning fork. When the tension is the string is increased to $160\,\, N,$ it sounds in unison with same tuning fork. calculate fundamental freq. of tuning fork …. $Hz$

hard

A wave is reflected from a rigid support. The change in phase on reflection will be

easy