Application of Ultrasonic Sound

Q. Ultrasound is not used __________.

1. by elephants to communicate over long distances
2. to find the distance of an object
3. as a tool in the treatment of muscular pain
4. to clean spiral tubes

Q. Ultrasound is sound having a frequency less than 20KHz.

1. True
2. False

Q. A ship sends a signal to the shore located $1360\text{m}$ away and the signal returns in $8\text{s}$. Calculate the speed of the signal.

1. $85\text{m/s}$
2. $340\text{m/s}$
3. $170\text{m/s}$
4. $680\text{m/s}$

Q. Ultrasound is not used __________.

1. by elephants to communicate over long distances
2. to find the distance of an object
3. as a tool in the treatment of muscular pain
4. to clean spiral tubes

Q. does not involve the application of ultrasonic sound.

1. SONAR
2. Echocardiography
3. Earthquake prediction
4. Breaking kidney stones

Q. Ultrasound can be used for which of the following purposes?

1. Echocardiography
2. Ultrasonography
3. MRI scan
4. Loudspeakers

Q. Question 18
How is ultrasound used for cleaning?

Q. Question 21
Explain how defects in a metal block can be detected using ultrasound.

Q.

What type of scans are used these days to monitor the growth of developing baby in the uterus of the mother ?

Q.

Give one use of ultrasound in industry and one in hospitals.