Advertisements
Advertisements
Question
Ultrasound has frequency of vibration
Options
between 20 and 20000 Hz
below 20 Hz
above 20000 Hz
between 500 and 10000 Hz
Solution
above 20000 Hz
Explanation -
Ultrasound has frequency of vibration above 20000 Hz.
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 sentences:
An average person can hear sound of frequencies in the range ______ to _________.
Complete the following sentence:
Bats can produce and hear ___________ sound.
Complete the following sentence:
Elephants produce ____________sound.
Can you hear the sound produced due to vibrations of a seconds pendulum? Give reasons.
What is ultrasound?
State two applications of ultrasound.
What do you understand by the term infrasonic vibrations?
What do you understand by the term sonic vibrations? State the range of sonic vibrations for the human ear.
Is the energy carried by the ultrasound very high or very low?
