waves and optics multiple choice
and a frequency of 200 Hz. What is its speed? A) 100 m/s B) 200 m/s C) 400 m/s D) 1000 m/s Answer: C) 400 m/s Calculation: v = f × λ = 200 Hz × 0.5 m = 100 m/s Correction: The calculation yields 100 m/s, which matches option A, not C. Therefore,