1. A Sonar of a ship sends sounds waves of speed 1000 m/s. These waves are reflected back by the ocean floor in 2 seconds. Find the depth (in m) of the ocean floor.
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By: anil on 05 May 2019 02.05 am
Speed of sound waves = 1000 m/s Using, distance = speed $$ imes$$ time = $$1000 imes2=2000$$ m But, this is the total distance travelled by the sound, so the depth is half of this. => Depth = $$frac{2000}{2}=1000$$ m => Ans - (C)
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