Question Detail
Question
Longitudinal waves travel on a metal bar at 3450 m/s. Find the two lowest standing wave frequencies on a rod of length 2 m clamped at both ends.
Correct Answer
Option C is the correct answer.
Detailed Explanation
For a rod clamped at both ends, the fundamental frequency f₁ = v/(2L) = 3450/(4) = 862.5 Hz. The second harmonic f₂ = 2f₁ = 1725 Hz.
Hint
f₁ = v/(2L).