level: Level 1 of Chapter 14
Questions and Answers List
level questions: Level 1 of Chapter 14
| Question | Answer |
|---|---|
| There are points along the spring that remain (almost) motionless while points on either side are oscillating with the greatest amplitude. What are they called respectively? | Points that do not move are called nodes Points where the spring oscillates with maximum amplitude are called antinodes |
| A stationary wave is formed whenever ... | 2 progressive waves of the same amplitde and wavelength, travelling in opposite directions, superpose |
| A wavelength of any progressive wave can be determined ... | from the separation between neighbouring nodes or antinodes of the resulting stationary wave pattern |
| What is the wave equations, where v is the speed of the wave, f is the frequency and wavelength. | v = f x wavelength |
| How does Kundt's dust tube work? | A loudspeaker sends waves along the inside of a tube. The sound is reflected at the closed end. When a staitionary wave is established, the dust at the antinodes vibrate violently. It tends to accumulate at the nodes, where the movement of the air is 0. The position of the nodes and antinodes can be clearly seen/ |