Advertisements
Advertisements
Question
Sonar makes use of :
Options
infrasonic sound
ultrasound
ordinary sound
light
Advertisements
Solution
Sonar makes use of : ultrasound
APPEARS IN
RELATED QUESTIONS
A microphone is connected to the Y-input of a C.R.O Three different sounds are made in turn in front of the microphone. Their traces (a), (b) and (c) produces on the screen are shown in following figure.
 |
 |
 |
| (a) | (b) | (c) |
- Which trace is due to the loudest sound? Give reason for your answer.
- Which trace is due for the sound with the lowest pitch? Explain your answer.
Complete the following sentence:
Infrasonic sound is of frequency ______________.
Name the sound of the frequency given below:
100 Hz
Name the sound of the frequency given below:
1000 Hz
What do you understand by the term sonic vibrations? State the range of sonic vibrations for the human ear.
What is Galton’s whistle? To what use is it put?
An electromagnetic wave has a time period of 4 × 10-8 s. Calculate its frequency in MHz.
What are ultrasonic?
What are infrasonic and ultrasonic sounds?
State the main components of a hearing aid.
