A pulse of a sound is transmitted from a ship and the reflection from the sea bed is recorded after 0.2s. Calculate the depth of the sea. [Take speed of sound in sea water = 1560ms-1]
A
312.0m
B
156.0m
C
78.0m
D
31.2m
Verified Correct Answer: B.
Physical Principles & Numerical Solution
x = \(\frac{vt}{2} = \frac{1560 \times 0.2}{2} = 156m\)
Source: Myschool Past Questions Archive (Record #34085)