A device used for investigating the vibration of a fixed string or wire is
A
Sonometer
B
barometer
C
Hydrometer
D
None of these
Easy
Download our app for free and get started
A
Sonometer
a (a)Sonometer is used to produce resonance of sound source with stretched vibrating string.
Download our app
and get started for free
Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*
A source of sound is moving with constant velocity of $20\, m/s$ emitting a note of frequency $1000 \,Hz.$ The ratio of frequencies observed by a stationary observer while the source is approaching him and after it crosses him will be
Two waves are propagating along a taut string that coincides with the $x-$axis. The first wave has the wave function $y_1 = A cos [k(x - vt)]$ and the second has the wave function $y = A cos [k(x + vt) + \phi ]$.
When a source of sound crosses a stationary observer then the change in apparent frequency of sound observed by the observer, when $V_{ s } < < V$, will be -
A suspension bridge is to be built across valley where it is known that the wind can gust at $5 \,s$ intervals. It is estimated that the speed of transverse waves along the span of the bridge would be $400 \,m / s$. The danger of resonant motions in the bridge at its fundamental frequency would be greater if the span had a length of .......... $m$
A source of sound and listener are approaching each other with a speed of $40 m/s.$ The apparent frequency of note produced by the source is $400 \,cps$. Then, its true frequency (in $cps$) is (velocity of sound in air $= 360 m/s$)