A wave has frequency 50 Hz and wavelength 4 m. Its speed is
A12.5 m/s
B54 m/s
C100 m/s
D200 m/sCORRECT
JAMB UTMEPhysics
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Why the answer is D, and why the others tempt you.
v = fλ = 50 × 4 = 200 m/s.
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