Advertisements
Advertisements
प्रश्न
Which of the above two graphs (a) and (b) (Fig.12.3) representing the human voice is likely to be the male voice? Give a reason for your answer.
उत्तर
Usually, the male voice has less pitch (or frequency) as compared to the female voice.
As the time period of wave represented by a graph (a) is more than that of the graph (b), so, graph (a) represents a lower frequency wave than graph (b) and hence is likely to be the male voice.
APPEARS IN
संबंधित प्रश्न
What is the audible range of the average human ear?
What is the range of frequencies associated with ultrasound?
Name the organs of hearing in our body.
What name is given to the sound waves of frequency too low for humans to hear ?
What is the frequency range of hearing in humans ?
What are ultrasonic waves ? Name two animals which can produce ultrasonic waves.
The audible range of frequencies of an average human ear is from 20 Hz to 20 kHz. Calculate the corresponding wavelengths. (Speed of sound in air is 344 ms–1)
One of the following can hear infrasound. This one is :
A girl is sitting in the middle of a park of dimension 12 m × 12 m. On the left side of it, there is a building adjoining the park and on the right side of the park, there is a road adjoining the park. A sound is produced on the road by a cracker. Is it possible for the girl to hear the echo of this sound? Explain your answer.
For hearing the loudest ticking sound heard by the ear, find the angle x in Fig.12.4.
