1. | \(-\text{ve}~x\) direction with frequency \(1\) Hz. |
2. | \(+\text{ve}~x\) direction with frequency \(\pi\) Hz and wavelength \(\lambda = 0.2~\text{m}\). |
3. | \(+\text{ve}~x\) direction with frequency \(1\) Hz and wavelength \(\lambda = 0.2~\text{m}\). |
4. | \(-\text{ve}~x\) direction with amplitude \(0.25\) m and wavelength \(\lambda = 0.2~\text{m}\). |
The velocity of sound in air is:
1. | faster in dry air than in moist air. |
2. | directly proportional to the pressure. |
3. | directly proportional to temperature. |
4. | independent of the pressure of air. |
1. | Pressure | 2. | Density of gas |
3. | Above both | 4. | None of the above |
1. | \(1:2\) | 2. | \(2:3\) |
3. | \(3:4\) | 4. | \(4:5\) |
1. | \(4\) | 2. | \(5\) |
3. | \(7\) | 4. | \(6\) |
1. | \(155~\text{Hz}\) | 2. | \(205~\text{Hz}\) |
3. | \(10.5~\text{Hz}\) | 4. | \(105~\text{Hz}\) |