A sound pulse takes 6 seconds to reach the ocean floor and bounce back to a submarine. If the speed of sound in water is 1480 m/s, find the depth of the ocean floor. MCQ with Answer and Explanation

A sound pulse takes 6 seconds to reach the ocean floor and bounce back to a submarine. If the speed of sound in water is 1480 m/s, find the depth of the ocean floor.
A. 6660 meters
B. 2220 meters
C. 4440 meters
D. 8880 meters
Answer: Option C
Solution (By JKSSB Mock Tests)
Total distance traveled = Speed * Total Time = 1480 * 6 = 8880 meters. Depth is half of total distance = 8880 / 2 = 4440 meters.

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Practice More Time Speed and Distance Questions

Question #1
A missile travels at a speed of 1440 km/h. Find the distance covered by the missile in exactly 12 seconds.
A. 4200 meters
B. 5000 meters
C. 4500 meters
D. 4800 meters

Correct Answer: Option D


Explanation:
Speed in m/s = 1440 * (5/18) = 80 * 5 = 400 m/s. Distance covered in 12 seconds = Speed * Time = 400 * 12 = 4800 meters.

This question belongs to: Maths Time Speed and Distance
Question #2
A person runs around a circular track of circumference 600 meters. If his speed is 18 km/h, how many rounds can he complete in 10 minutes?
A. 4 rounds
B. 6 rounds
C. 8 rounds
D. 5 rounds

Correct Answer: Option D


Explanation:
Speed = 18 km/h = 5 m/s. Time = 10 minutes = 600 seconds. Total distance covered = 5 * 600 = 3000 meters. Number of rounds = 3000 / 600 = 5 rounds.

This question belongs to: Maths Time Speed and Distance
Question #3
The speed of a train is 90 km/h. How many meters does it cross in exactly 12 seconds?
A. 320 meters
B. 300 meters
C. 280 meters
D. 350 meters

Correct Answer: Option B


Explanation:
Speed = 90 * (5/18) = 25 m/s. Distance in 12 seconds = Speed * Time = 25 * 12 = 300 meters.

This question belongs to: Maths Time Speed and Distance