Exam-style question
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A wave travels at a speed of 340 m/s and has a frequency of 170 Hz. What is its wavelength?.
- A.2 m
- B.1.5 m
- C.3 m
- D.4 m
Model answer
What a good answer should say
- 2 m
Explanation
Why this works
To find the wavelength (λ), we use the formula v = f × λ. Rearranging gives λ = v / f.
Substituting the values, λ = 340 m/s / 170 Hz = 2 m. Thus, the wavelength is 2 m.
Common mistake
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