Multiple choice

A man stands in between two cliffs and fires a gun. He hears two successive echoes after 3 seconds and 5 seconds. What is the distance between two cliffs? [speed of sound=330 ms−1]

  1. 1320 m

  2. 132 m

  3. 1333 m

  4. 1230 m
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A Correct answer
Explanation

Distance to cliff 1 = (330 * 3) / 2 = 495 m. Distance to cliff 2 = (330 * 5) / 2 = 825 m. Total distance = 495 + 825 = 1320 m.

AI explanation

Using the formula Distance equals Speed multiplied by Time, the distance to the first cliff is 2.5 multiplied by 330, which equals 825 meters. The distance to the second cliff is half of 5 multiplied by 330, resulting in 825 meters. The total distance between the two cliffs is the sum of these two distances, 825 plus 825, which equals 1320 meters. The distance between the cliffs is 1320 m.

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