Advertisements
Advertisements
प्रश्न
A sonar station picks up a return signal after 3 seconds. How far away is the object ? (Speed of sound in water = 1440 m/s).
उत्तर
We have to calculate the depth using a sonar signal.
Given: Time taken to listen to the return signal t = 3 s
So time taken to reach the depth `(t_D) = 3/2` s
Speed of sound in water ν = 1,440 m/s
So the depth can be calculated as
= ν × tD
= 1440 × 1.5 m
= 2160 m
APPEARS IN
संबंधित प्रश्न
Explain how defects in a metal block can be detected using ultrasound.
Name the characteristic of sound which depends on (a) amplitude (b) frequency, and (c) waveform.
What type of scans are used these days to monitor the growth of developing baby in the uterus of the mother ?
What is the name of the device which is used to find the depth of sea (or ocean) by using ultrasonic sound waves ?
Write the full name of 'SONAR'.
What is the range of frequencies associated with (a) infrasound (b) audible sound, and (c) ultrasound ?
Define the following terms : (a) Echolocation (b) Echocardiography, and (c) Ultrasonography.
Which of the two produces ultrasonic waves : porpoise or whale ?
In SONAR we use:
Explain how does SONAR work?
