Resonance: examples and uses - class-XI
Description: resonance: examples and uses | |
Number of Questions: 30 | |
Created by: Ashok Pandey | |
Tags: oscillatory motion physics oscillations free, damped and forced oscillations option b: engineering physics |
In an open pipe, the pressure variation at the ends of the pipe is maximum.
Two understand oscillators are known to have the same neutral frequency $ \omega _0 $ . The mass and damping coefficient of the first oscillator are $m _1 $ and $b _1 $ , and the mass and damping coefficient of the second oscillator are $m _2 $ and $b _2$ , respectively. A sinusoidal driving force of $F _{ext} = F _0 \cos \omega t $ is applied to each oscillator. Starting with $\omega $ far from $ \omega _0$ the driving force is tuned in order to observe resonant behavior. If $ m _1 = 4 m _2 $ and $b _1 = 2b _2 $ , then which one the following statements concerning the driven oscillations is correct?
A student is performing the experiment of resonance Column. The diameter of the column tube is $4\ cm$. The frequency of the tuning fork is $512\ Hz$. The air temperature $38^{o}C$ in which the speed sound is $336\ m/s$. The zero of the meter scale coincides with the top end of the Resonance Column tube. When the first resonance occurs, the reading of the water level in the column is:
The example of forced vibration is
Amplitude of a wave is represented by $A=\frac{c}{a+b-c}$ Then resonance will occur when
If two vibrating systems are in resonance, then :
Resonance is exhibited in
What conditions are necessary to produce resonance in an object?
Pick the wrong statement:
Interference to occur:
If a singer could match the natural frequency of the wine glass, he:
State whether the given statement is True or False :
Resonance occurs when a vibrating system or external force drives another system to ____ with greater _ at a specific preferential ______. Fill in the blanks.
In a resonance tube with tuning fork of frequency $512 \ Hz$, first resonance occurs at water level equal to $30.3 \ cm$ and second resonance occurs at $63.7 \ cm$. The maximum possible error in the speed of sound is
The phenomenon of resonance is used in receiving the radio and television programmes.
In a resonance column experiment the first resonance is obtained when the level of the water in tube is $20$cm from the open end. Resonance will also be obtained when the water level is at a distance of :
The third overtone of a pipe is found to be in unison with the first overtone of an open pipe. The ratio of lengths of the pipes is
In case of a forced vibration, the resonance wave becomes very sharp when the
In Resonance tube experiment, if $400\ Hz$ tuning fork is used, the first resonance occurs when length of air column in the tube is $19\ cm$. If the $400\ Hz$. tuning fork is replaced by $1600\ Hz$ tuning fork then to get resonance, the water level in the tube should be further lowered by (take end correction $= 1\ cm)$.
The first resonance length of a resonance tube is 40 cm and the second resonance length is 122 cm.third resonance length of the tube will be
A organ pipe open on both ends in the $n^{th}$ harmonic is in resonance with a source of $1000 \,Hz$. The length of pipe is $16.6 \,cm$ and speed of sound in air is $332 \,m/sec$. Find the value of $n$.
In a forced harmonic oscillator of natural frequency $\omega _0$, the resonant frequency $\omega _r$ is
Resonance is a special case of $\underline{ }$ vibrations, when frequency of the driving force is$\underline{ }$ natural frequency of the body.
A forced oscillator is acted upon by a force $F={ F } _{ \circ }sin\omega t.$. The amplitude of oscillation is given by $\displaystyle\frac{55}{\sqrt{2\omega^2 - 36\omega + 9}}$. The resonant angular frequency is
Imagine a child sitting on a swing in a park and the child's mother is pushing the swing from the back. The mother maintains the same tempo as the motion of the swing. If the mother tries to push at a faster tempo, the arc of the swing will:
A vibrating object will pick out its __________ from a complex excitation and vibrate at those frequencies.
Which one does not work on principles of resonance?
In a resonance column experiment, the first resonance is obtained when the level of the water in tube is $20 cm$ from the open end. Resonance will also be obtained when the water level is at a distance of
Assertion : In the ideal case of zero damping, the amplitude of simple harmonic motion at resonance is infinite.
Reason : All real systems have some damping.