Advertisements
Advertisements
Question
How is an ultrasound scan for fetus (unborn baby) better than X-ray ?
Advertisements
Solution
An ultrasound scan for fetus is better than X-rays because X-rays can damage the delicate body cells of the fetus.
APPEARS IN
RELATED QUESTIONS
Explain how bats use ultrasound to catch a prey.
Explain how defects in a metal block can be detected using ultrasound.
Define the 'frequency' and 'time-period' of a wave. What is the relation between the two?
Name the unit used to measure the loudness of sound. Also write its symbol.
What type of scans are used these days to monitor the growth of developing baby in the uterus of the mother ?
Give one use of ultrasound in industry and one in hospitals.
How is it that bats are able to fly at night without colliding with other objects ?
What is the range of frequencies associated with (a) infrasound (b) audible sound, and (c) ultrasound ?
A sonar station picks up a return signal after 3 seconds. How far away is the object ? (Speed of sound in water = 1440 m/s).
In SONAR we use:
