A man standing between two parallel cliffs fires a gun. He hear two echos one after $3$ second and the other after $5$ second. The separation between the two cliffs is $1360$ m, the speed of sound is

Question

A pipe open at both ends has a fundamental frequency $f$ in air. The pipe is now dipped vertically in water drum to half of its length. The fundamental frequency of the air column is now equal to:

Answer 1

Step 1: Distances
$2d_{1}=3v$ and $2d_{2}=5v$.

Step 2: Add
Adding gives $2(d_{1}+d_{2})=8v$, and $d_{1}+d_{2}=1360$ m, so $2720=8v$.

Step 3: Solve
$v=340$ m/s, option (C).

Final Answer:
The speed of sound is 340 m/s. \[ \boxed{\text{(C) }340\text{ m/s}} \]

A man standing between two parallel cliffs fires a gun. He hear two echos one after \(3\) second and the other after \(5\) second. The separation between the two cliffs is \(1360\) m, the speed of sound is

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The Correct Option is C

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