Advertisements
Advertisements
प्रश्न
How does a man’s voice differ from a woman’s voice ?
Advertisements
उत्तर
A female voice is shriller than a male voice because of higher frequency. Higher is the frequency, shriller is the sound. Female has higher frequency.
APPEARS IN
संबंधित प्रश्न
Distinguish between loudness and intensity of sound.
Describe an experiment to show the production of sound having low and high pitch.
Explain the terms 'crests' and troughs' of a wave? What type of waves consist of crests and troughs?
Fig. shows three ways in which a string of length l in an instrument can vibrate.
 |
 |
 |
| (i) | (ii) | (iii) |
- Which of the diagram shows the principle note?
- Which vibration has the frequency four times that of the first?
- Which vibration is of the longest wavelength?
- What is the ratio of the frequency of the vibration in (i) and (ii)?
Complete the following sentence :
Sound is produced by a ___________ body.
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 |
Sound can travel through solids, gases, liquids, and even vacuum.
What do you understand by the term echo?
Two sound waves X and Y have the same amplitude and the same wave pattern but their frequencies are 60 Hz and 120 Hz respectively, then ______.
