1. | \(100~\text{Hz}\) | 2. | \(200~\text{Hz}\) |
3. | \(50~\text{Hz}\) | 4. | \(400~\text{Hz}\) |
1. | due to the decrease in pressure. |
2. | due to a decrease in temperature. |
3. | as a result of a decrease in both temperature and pressure. |
4. | statement is wrong. |
1. | Constantly increases. |
2. | Increases at first, then becomes constant. |
3. | Constantly decreases. |
4. | Decreases at first, then becomes constant. |
1. | 2. | ||
3. | 4. |
\(y\text-x\) graph of a travelling wave along \(+x\) direction is shown at any instant \(t\). (Symbols have their usual meanings). The velocity of a particle at:
1. | \(x_1\) is downward |
2. | \(x_2\) is downward |
3. | \(x_3\) is upward |
4. | \(x_4\) is downward |
A sound wave is passed through a chamber.
If the rms speed of molecules in a gas is \(v_1\) and the speed of sound is \(v_2\) in the gas, then:
1. \(v_1= v_2\)
2. \(v_1> v_2\)
3. \(v_1< v_2\)
4. \(v_1\leq v_2\)
Given below are two statements:
Statement I: | A pressure wave can be generated from a displacement wave. |
Statement II: | Displacement and pressure waves have a phase difference of \(\dfrac{\pi }{2}.\) |
1. | Statement I is incorrect and Statement II is correct. |
2. | Both Statement I and Statement II are correct. |
3. | Both Statement I and Statement II are incorrect. |
4. | Statement I is correct and Statement II is incorrect. |
1. | The velocity of the component wave is \(0.5~\text{cm/s}\). |
2. | The amplitude of one of the component waves is \(6~\text{cm}\). |
3. | The distance between two consecutive nodes is \(0.5~\text{cm}\). |
4. | \(x= 0.25~\text{cm}\) is the first node except the nodes at the ends. |