JAMB Physics 2009 Objective — Question 26
Question 26 of 50 from the Joint Admissions and Matriculation Board (JAMB) Physics 2009 Objective paper, with the correct answer and a full explanation.
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26. Given the progressive wave equation y = 5 sin(2000πt-0.4x), calculate the wavelength.
- A. 12.4m
- B. 15.7mCorrect
- C. 17.5m
- D. 18.6m
Explanation
Comparing with y=Asin(2πft-2πx/λ), 2π/λ = 0.4, so λ = 2π/0.4 ≈ 15.7m.
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