Advertisements
Advertisements
प्रश्न
State the main components of a hearing aid.
एक पंक्ति में उत्तर
Advertisements
उत्तर
The main components of hearing aid are microphone , amplifier and earphone.
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
The sketches I to IV in following Figure show sound waves, all formed in the same time interval.
 |
 |
| I | II |
 |
 |
| III | IV |
Which diagram shows
- a note from a musical instrument
- a soft (or feeble) note,
- a bass (low frequency) note.
Complete the following sentence:
Ultrasound is of frequency ___________.
Name the sound of the frequency given below:
1000 Hz
State the approximate speed of ultrasound in air.
The properties of ultrasound that make it useful are
State four practical uses of ultrasonic vibrations.
What are ultrasonic? State and explain two applications of ultrasounds.
Is the energy carried by the ultrasound very high or very low?
1 hertz is equal to
Ultrasound has frequency of vibration
