Question

pls ans me for question no. 16

Answer 1

1.SONAR ( sound navigation and ranging) is fitted in the ship..

2.SONAR Principle:-

This instrument is based on a very simple principle i.e a pulse of ultrasonic waves is sent into the water there it strikes the target and get bounced back towards the source .(We can’t hear these ultrasonic waves as their pitch is too high for humans to detect).

3.summit shown that
When the target is detected with the help of side scan sonar ,we use it to guide the rescue diver to the site where the recovery is required . This is the best option in that cases where the visibility is close to zero by summit....

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