Advertisements
Advertisements
प्रश्न
A sonar device on a submarine sends out a signal and receives an echo 5 s later. Calculate the speed of sound in water if the distance of the object from the submarine is 3625 m.
Advertisements
उत्तर
Time taken to hear the echo, t = 5 s
Distance of the object from the submarine, d = 3625 m
Total distance travelled by the sonar waves during the transmission and reception in water = 2d
Velocity of sound in water, `"v"=(2d)/t=(2xx3625)/5=1450" ms"^-1`
संबंधित प्रश्न
How is ultrasound used for cleaning?
Name the unit used to measure the loudness of sound. Also write its symbol.
Write the full name of 'SONAR'.
What happens to the loudness of a sound if its amplitude decreases ?
What name is given to sound waves of frequencies higher than 20 kHz ?
What is meant by the quality (or timbre) of sound ? On what factor does the quality (or timbre) of a sound depend ?
Explain how, bats use ultrasound to catch the prey.
What is the range of frequencies associated with (a) infrasound (b) audible sound, and (c) ultrasound ?
Name an animal which navigates and finds food by ecolocation.
Fill in the blank and explain.
To discover a sunken ship or objects deep inside the sea, ______ technology is used.
