Figure, shows a stationary wave between two fixed points P and Q . Which point (s) of 1, 2 and 3 are

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14.Waves and Sound

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Figure, shows a stationary wave between two fixed points $P$ and $Q$. Which point$(s)$ of $1, 2$ and $3$ are in phase with the point $X?$

$1, 2$ and $3$

$1$ and $2$ only

$2$ and $3$ only

$3$ only

Solution

Two points on a transverse wave having same magnitude of displacement from the equilibrium line are said to be in the same phase only if the direction of displacement and direction of motion are also same. For point $1,$ the direction of displacement is opposite (it can be clearly seen if $\mathrm{X}$ is on the upper side of equilibrium, point $1$ will be on lower side and $vice-versa$). Also, point $2$ has an opposite direction of motion. So only point $3$ is in phase with $x$.

Standard 11

Physics

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Figure, shows a stationary wave between two fixed points $P$ and $Q$. Which point$(s)$ of $1, 2$ and $3$ are in phase with the point $X?$

Solution

Similar Questions

The tension of a stretched string is increased by $69\%$. In order to keep its frequency of vibration constant, its length must be increased by ….. $\%$

A sonometer wire of resonating length $90 \mathrm{~cm}$ has a fundamental frequency of $400 \mathrm{~Hz}$ when kept under some tension. The resonating length of the wire with fundamental frequency of $600 \mathrm{~Hz}$ under same tension________.$\mathrm{cm}$.

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