A point source emits sound equally in all directions in a non-absorbing medium. Two points P and Q a

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14.Waves and Sound

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A point source emits sound equally in all directions in a non-absorbing medium. Two points $P$ and $Q$ are at a distance of $9\ meters$ and $25\ meters$ respectively from the source. The ratio of the amplitudes of the waves at $P$ and $Q$ is

$5 : 3$

$3 : 5$

$25 : 9$

$625 : 81$

Solution

$\mathrm{I} \propto \mathrm{A}^{2}, \mathrm{I} \propto \frac{1}{\mathrm{r}^{2}}, \frac{\mathrm{A}_{1}}{\mathrm{A}_{2}}=\frac{\mathrm{r}_{2}}{\mathrm{r}_{1}}$

Standard 11

Physics

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normal

A point source emits sound equally in all directions in a non-absorbing medium. Two points $P$ and $Q$ are at a distance of $9\ meters$ and $25\ meters$ respectively from the source. The ratio of the amplitudes of the waves at $P$ and $Q$ is

Solution

Similar Questions

A transverse wave is travelling along a stretched string from right to left. The figure shown represents the shape of the string at a given instant. At this instant

A sufficiently long closed organ pipe has a small hole at its bottom. Initially, the pipe is empty. Water is poured into the pipe at a constant rate. The fundamental frequency of the air column in the pipe

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