The speed of highly penetrating ultrasonic waves is :

(a) lower than those of audible sound waves

(b) higher than those of audible sound waves

(c) much higher than those of audible sound waves

(d) same as those of audible sound waves

Q. The speed of highly penetrating ultrasonic waves is :
(a) lower than those of audible sound waves
(b) higher than those of audible sound waves
(c) much higher than those of audible sound waves
(d) same as those of audible sound waves

Q. As compared to audible sound, ultrasonic waves have:

Q. Assertion :Ultrasonic waves are longitudinal waves of frequency grater than $20,000Hz$ Reason: The maximum frequency of audible sound waves is $20,000Hz$

Q. Sound waves of wavelength greater than that of audible sound are called ________.

Q.

In SONAR we use :

(a) ultrasonic waves

(b) infrasonic waves

(c) radio waves

(d) audible sound waves