274473 Two pulses in a stretched string whose centres are initially $8\text{cm}$ apart are moving towards each other as shown in the figure. The speed of each pulse is $2\text{cm}/\text{s}$. After $2\text{s}$, the total energy of the pulses will be

274474 Two sound waves travel in the same direction in a medium. The amplitude of each wave is $A$ and the phase difference between the two waves is ${{120}^{\circ }}$. The resultant amplitude will be.

274476 In a large room, a person receives direct sound waves from a source $120\text{m}$ away from him. He also receives waves from the same source which reach him, being reflected from the $25\text{m}$ high celling at a point halfway between them. The two waves interfere constructively for wavelength of

274475 Two sound sources ${{S}_{2}}$ and ${{S}_{1}}$ emit pure sinusoidal coherent waves in phase. If the speed of sound is $340\text{m}/\text{s}$, then find out the frequencies for which constructive interference occurs at $\text{P}$.

274473 Two pulses in a stretched string whose centres are initially $8\text{cm}$ apart are moving towards each other as shown in the figure. The speed of each pulse is $2\text{cm}/\text{s}$. After $2\text{s}$, the total energy of the pulses will be

274474 Two sound waves travel in the same direction in a medium. The amplitude of each wave is $A$ and the phase difference between the two waves is ${{120}^{\circ }}$. The resultant amplitude will be.

274476 In a large room, a person receives direct sound waves from a source $120\text{m}$ away from him. He also receives waves from the same source which reach him, being reflected from the $25\text{m}$ high celling at a point halfway between them. The two waves interfere constructively for wavelength of

274475 Two sound sources ${{S}_{2}}$ and ${{S}_{1}}$ emit pure sinusoidal coherent waves in phase. If the speed of sound is $340\text{m}/\text{s}$, then find out the frequencies for which constructive interference occurs at $\text{P}$.

274473 Two pulses in a stretched string whose centres are initially $8\text{cm}$ apart are moving towards each other as shown in the figure. The speed of each pulse is $2\text{cm}/\text{s}$. After $2\text{s}$, the total energy of the pulses will be

274474 Two sound waves travel in the same direction in a medium. The amplitude of each wave is $A$ and the phase difference between the two waves is ${{120}^{\circ }}$. The resultant amplitude will be.

274476 In a large room, a person receives direct sound waves from a source $120\text{m}$ away from him. He also receives waves from the same source which reach him, being reflected from the $25\text{m}$ high celling at a point halfway between them. The two waves interfere constructively for wavelength of

274475 Two sound sources ${{S}_{2}}$ and ${{S}_{1}}$ emit pure sinusoidal coherent waves in phase. If the speed of sound is $340\text{m}/\text{s}$, then find out the frequencies for which constructive interference occurs at $\text{P}$.

274473 Two pulses in a stretched string whose centres are initially $8\text{cm}$ apart are moving towards each other as shown in the figure. The speed of each pulse is $2\text{cm}/\text{s}$. After $2\text{s}$, the total energy of the pulses will be

274474 Two sound waves travel in the same direction in a medium. The amplitude of each wave is $A$ and the phase difference between the two waves is ${{120}^{\circ }}$. The resultant amplitude will be.

274476 In a large room, a person receives direct sound waves from a source $120\text{m}$ away from him. He also receives waves from the same source which reach him, being reflected from the $25\text{m}$ high celling at a point halfway between them. The two waves interfere constructively for wavelength of

274475 Two sound sources ${{S}_{2}}$ and ${{S}_{1}}$ emit pure sinusoidal coherent waves in phase. If the speed of sound is $340\text{m}/\text{s}$, then find out the frequencies for which constructive interference occurs at $\text{P}$.