67th B.P.S.C. (Pre) 2022
Which of the following rays/waves is used to know the development of the fetus in the womb?
aX-rays
bMicrowaves
cUltrasonic waves✓ Correct
dUltraviolet rays
eNone of the above/More than one of the above
Explanation
To know the development of the fetus in the womb, ultrasonic waves are used in ultrasonography. ## Page 22 ## PLAN T PHYSIOLOGY ## I. Photosynthesis
general-science