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प्रश्न
Describe a simple method to find the depth of a submerged ship.
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उत्तर
A ship sends ultrasonic waves downward in the ocean. When the sound waves reaches the ocean floor , they are reflected back to the ship . The time it takes for the signal to return is used to calculate the depth of submerged ship in the ocean.
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संबंधित प्रश्न
Which has the higher frequency - ultrasonic sound or infrasonic sound?
Complete the following sentences:
An average person can hear sound of frequencies in the range ______ to _________.
Complete the following sentence:
Ultrasound is of frequency ___________.
Complete the following sentence:
Infrasonic sound is of frequency ______________.
State the approximate speed of ultrasound in air.
How do bats locate their prey during a flight?
What is Galton’s whistle? To what use is it put?
What are ultrasonic? State and explain two applications of ultrasounds.
What are infrasonic and ultrasonic sounds?
Bats produce ______ sound during screaming.
