Figure A below shows the equilibrium positions of air particle 1, 2, 3 etc, and Figure B shows their positions at an instant when a longitudinal travelling wave moves through the air to the right. Which of the following statement(s) concerning the air particles in Figure B is/are correct.

Question

G1 Physics · Accepted Answer

Step 1: Identify the governing wave relation from the data and preserve the stated boundary/phase conditions. Step 2: Substitute the numerical values with SI units and simplify. Step 3: Compare with the keyed result from the source. Final: B: Particle 3 and 5 are moving in same direction at this instant.; C: Particle 3 will move to the right immediately after this instant of time; D: Particle 7 will move to the left immediately after this instant of time.