Question

The ultrasonic waves produced by the transmitter are of :

• A. very high frequency
• B. very low frequency
• C. order of $1000Hz$
• D. order of $20000Hz$

Answer 1

The correct option is A very high frequency

Transmitter produces and transmits ultrasonic waves of very high frequency and detector converts the reflected ultrasonic waves into electric signals. The frequency of ultrasonic waves produced is of approx $50000Hz$.