MCQ
A stretched string is vibrating in its $5^{th}$ harmonic as shown. Consider a particle $1(figure)$. At an instant this particle is at mean positions and is moving towards its negative extreme. Which of the following set of particles, are in same phase with particle $1$
  • A
    $2, 4, 7$
  • B
    $3, 5, 6$
  • $5, 7, 8$
  • D
    $2, 4, 6$

Answer

Correct option: C.
$5, 7, 8$
c
Between $2$ nodes all particle vibrate in same phase

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

The displacement of a particle executing periodic motion is given by :
$y = 4cos^2\,(t/2)sin\,(1000t)$
This expression may be considered to be a result of superposition of
$A$ wire loop is placed in a region of time varying magnetic field which is oriented orthogonally to the plane of the loop as shown in the figure. The graph shows the magnetic field variation as the function of time. Assume the positive $emf$ is the one which drives a current in the clockwise direction and seen by the observer in the direction of $B$. Which of the following graphs best represents the induced emf as a function of time.
Time period of a block suspended from the upper plate of a parallel plate capacitor by a spring of stiffness $k$ is $T$. When block is uncharged. If a charge $q$ is given to the block them, the new time period of oscillation will be
A point object is placed at a distance of $20\, cm$ from a thin plano-convex lens of focal length $15\, cm$, if the plane surface is silvered. The image will form at :-
A series $L C R$ circuit consists of an inductor $L$ a capacitor $C$ and a resistor $R$ connected across a source of emf $\varepsilon$ $=\varepsilon_0 \sin \omega t$. When $\omega L=\frac{1}{\omega C}$ the current in the circuit is $I_0$ and if angular frequency of the source is changed to $\omega^{\prime}$, the current in the circuit becomes $\frac{I_0}{2}$, then the value of $\left|\omega^{\prime} L-\frac{1}{\omega^{\prime} C}\right|$ is
In half wave rectification, if the input frequency is $60\,Hz$, then the output frequency would be$\dots\dots\dots\,Hz$
In an ac circuit, peak value of voltage is $423\, volts$. Its effective voltage is .......... $volts$
A projectile is thrown in the upward direction making an angle of $60^o$ with the horizontal direction with a velocity of $150\, ms^{-1}$. Then the time after which its inclination with the horizontal is $45^o$ is
Susceptibility of $Mg$ at $300\, K$ is $1.2 \times {10^{ - 5}}$. The temperature at which susceptibility will be $1.8 \times {10^{ - 5}}$ is......$K$