Advertisements
Advertisements
प्रश्न
Which of the following sound frequencies cannot be heard by a human ear ?
(i) 10 Hz
(ii) 100 Hz
(iii) 10,000 Hz
(iv) 15 Hz
(v) 40,000 Hz
Advertisements
उत्तर
The sound frequencies among the following that cannot be heard by human are 10 Hz, 15 Hz, and 40,000 Hz.
APPEARS IN
संबंधित प्रश्न
What is the range of frequencies associated with infrasound?
What is the range of frequencies associated with ultrasound?
Fill in the blanks with suitable words.
A sound wave consists of places of higher pressure called ................. and places of................pressure called.................
What name is given to the sound waves of frequency too high for humans to hear ?
Choose the infrasonic waves and ultrasonic waves from the following frequencies :
(i) 10,000 Hz
(ii) 30,000 Hz
(iii) 18 Hz
(iv) 50,000 Hz
(v) 10 Hz
What is the frequency range of hearing in humans ?
What is ultrasound ? What is the difference between ordinary sound and ultrasound ?
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.

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.

