Arun
Last Activity: 5 Years ago
The ratio of the lengths of the closed organ pipes is equal to the fundamental notes produced by them.
That is, L1/L2=f1/f2, since L1/L2=100/101
So in (option D) we have f1/f2=500/505=100/101.
Hence, the fundamental notes (in Hz.) produced by them are 500, 501.