Physics > 2001 > 18
JAMB UTME
Find the frequencies of the first three harmonics of a piano string of length 1.5m, if the velocity of the waves on the string is 120ms-1.
A.
180Hz, 360Hz, 540Hz.
B.
360Hz, 180Hz, 90Hz.
C.
40Hz, 80Hz, 120Hz.
D.
80Hz, 160Hz, 240Hz.
Answer: C
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