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Question 101
H

A sonar system sends one pulse every 0.20 s. The echo must return before the next pulse is sent. The speed of ultrasound in water is 1480 m/s.

Which is the greatest depth below the transmitter for which the echo returns before the next pulse?

[1]
A

150 m150\ \mathrm{m}150 m

B

280 m280\ \mathrm{m}280 m

C

140 m140\ \mathrm{m}140 m

D

300 m300\ \mathrm{m}300 m

Markscheme

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