Question

a taut wire of length'w'emits a single note when plucked.if it were half as long it would emit the same note but one octave higher.how long should the same wire be to emit the same note but one octave lower?which gives the biggest answer?1)2.3x8 2)3.4x7 3)4.5x6 4)5.6x5 5)6.7x4

Answer 1

twice as long

what happened to "w" ?
who cares about the biggest answer? we want the correct answer.

Answer 2

would u please explain,thanks