Two organ pipes, each closed at one end, gives 5 beats per s, when emitting their fundamental notes. If their lengths are in the ratio of 50: 51, their fundamental frequencies (in Hz) are
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Two organ pipes, each closed at one end, gives 5 beats per s, when emitting their fundamental notes. If their lengths are in the ratio of 50: 51, their fundamental frequencies (in Hz) are

G1 Physics · Accepted Answer

Step 1: For two closed pipes, f ∝ 1/L, so f₁/f₂ = 51/50. Step 2: With |f₁−f₂|=5 Hz, solving gives f₁=255 Hz and f₂=250 Hz. Final: A.