A wave has frequency 50 Hz and wavelength 0.6 m. Its speed is
A. 0.012 m/s
B. 83.3 m/s
C. 300 m/s
D. 30 m/s
Answer: Option D
Solution (By JKExamLibrary)
Wave speed v = fλ = 50 × 0.6 = 30 m/s. Basic wave equation. Ensure consistent units: frequency Hz (s⁻¹), wavelength m. Speed of sound 340 m/s in air, this is slower.
Explanation:
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