Questions
Ultrasonic waves are those waves
a
To which man can hear
b
Man can't hear
c
Are of high velocity
d
Of high amplitude
detailed solution
Correct option is B
Ultrasonic waves are those of higher frequencies than maximum audible range frequencies (audible range of frequencies is 20 Hz to 20000 Hz)Talk to our academic expert!
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Ultrasonic signal sent from SONAR returns to it after reflection from a rock after a lapse of 1 sec. If the velocity of ultrasound in water is 1600 ms–1, the depth of the rock in water is
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