Two sound sources of same frequency produce sound intensities $I_0$ and $4{\mathrm{I}}_0$ at a point $P$ when used separately. Now, they are used together so that the sound waves from them reach $P$ with a phase difference $\varphi .$ Determine the resultant intensity at $P$ for $\varphi =0$

Two identical sources of sound $S_1$ and $S_2$ produce intensity $I_0$ at a point $P$ equidistant from each source. Determine the intensity of each source at the point $P.$

Two identical sources of sound $S_1$ and $S_2$ produce intensity $I_0$ at a point $P$ equidistant from each source. If the power of $S,$ is reduced to $64\%$ and phase difference between the two sources is varied continuously, then determine the maximum and minimum intensities at the point $P.$

Two identical sources of sound $S_1$ and $S_2$ produce intensity $I_0$ at a point $P$ equidistant from each source. If the power of $S_1$ is reduced by $64\%,$ then determine the maximum and minimum intensities at the point $P.$

Two stereo speakers are separated by a distance of $2.40 \mathrm{m}$. A person stands at a distance of $3.20 \mathrm{m}$ directly in front of one of the speakers as shown in the figure. Find the frequencies in the audible range $(20-20000 \mathrm{Hz})$ for which the listener will hear a minimum sound intensity. Speed of sound in air $=320 {\mathrm{ms}}^{-1}$.

Two speakers $S,$ and $S_2$ derived by the same amplifier and placed at $y=1.0 \mathrm{m}$ and $y=-1.0 \mathrm{m}$ (figure) The speakers vibrate in phase at $600 \mathrm{Hz}.$ A man stands at a point on the $x$ -axis at a very large distance from the origin and starts moving parallel to the $Y$ -axis. The speed of sound in air is $330 \mathrm{m}/\mathrm{s}.$

At what angle will the intensity of sound drop to a minimum for the first time?

Two speakers $S,$ and $S_2$ derived by the same amplifier and placed at $y=1.0 \mathrm{m}$ and $y=-1.0 \mathrm{m}$ (figure) The speakers vibrate in phase at $600 \mathrm{Hz}.$ A man stands at a point on the $x$ -axis at a very large distance from the origin and starts moving parallel to the $Y$ -axis. The speed of sound in air is $330 \mathrm{m}/\mathrm{s}.$

At what angle will the sound intensity be maximum for the first time?