Advertisements
Advertisements
Question
Which wave property determines pitch?
Advertisements
Solution
The way the brain interprets the frequency of an emitted sound is called its pitch. The faster the vibration of the source, the higher the frequency and the higher the pitch.
APPEARS IN
RELATED QUESTIONS
How is sound produced ?
Explain the terms 'compressions' and 'rarefactions' of a wave. What type of waves consist of compressions and rarefactions.
The heart of a man beats 75 times a minute. What is its (a) frequency and (b) time period?
Match the pairs.
| Group ‘A’ | Group ‘B’ |
| (a) Flute | (1) Frequency less than 20 Hz |
| (b) Frequency | (2) Frequency more than 20000 Hz |
| (c) Sound level | (3) Vibrations in the air |
| (d) Ultrasonic sound | (4) Measured in Hz |
| (e) Infrasonic sound | (5) Decibel |
What do you understand by the term sound energy?
A bat emits an ultrasonic sound of frequency 0.25 MHz. Calculate the time in which one vibration is completed.
Distinguish between light and sound waves. What are the consequences of the large difference in the speed of sound and that of light? Briefly explain them.
What is echolocation? How do animals make use of this phenomenon?
Match the following.
| 1. | Tuning fork | The point where density of air is maximum |
| 2. | Sound | Maximum displacement from the equilibrium position. |
| 3. | Compressions | The sound whose frequency is greater than 20,000 Hz. |
| 4. | Amplitude | Longitudinal wave. |
| 5. | Ultasonics | Production of sound. |
What types of medium are required for sound to travel?
