Question

Write the following statements in a sequential order to find the depth of the ocean bed by using SONAR.

(A) The depth of the ocean bed can be found by, $d=\frac{vt}{2}$.

(B) The velocity of ultrasonic in the ocean water is $v$ and the time is taken to receive the reflected ultrasonic from the ocean bed is$\text{'}t\text{'}.$

(C). At the bottom of a ship two devices, first a transmitter which produces ultrasonic and second a receiver for the detection of the reflected ultrasonic from the ocean bed, are fixed.

(D) If depth of oceans bed is d, then $v=\frac{2d}{t}$

• A. CBAD
• B. BCDA
• C. CBDA
• D. BCAD

Answer 1

The correct option is C

CBDA

Correct option is C: CBDA

SONAR:

Sonar stands for sound navigation ranging. It is defined as the technique used for determining the distance and direction of underwater objects with the help of sound waves. This technique is used by animals such as bats and whales.

Sonar systems are divided into three categories and they are:

1. Active sonar: In this system, sound waves are generated such that they spread out and gets reflected by the target object. A receiver is used for analyzing these reflected signals.
2. Passive sonar: Here, only receivers are used so as to analyze the characteristics of the reflected waves.
3. The last category of the sonar system is used in the communication system which includes a projector as well as a receiver.

Sequential order to find the depth of the ocean bed by using SONAR:

1. At the bottom of a ship two devices, first a transmitter which produces ultrasonic and second a receiver for the detection of the reflected ultrasonic from the ocean bed, are fixed.
2. The velocity of ultrasonic in the ocean water is $v$ and the time taken to receive the reflected ultrasonic from the ocean bed is $\text{'}t\text{'}.$
3. If depth of oceans bed is d, then $v=\frac{2d}{t}$.
4. The depth of the ocean bed can be found by, $d=\frac{vt}{2}$