A wave is represented by y = (0.002 mm) sin[(50 s⁻¹)t + (2 m⁻¹)x]. Which statement is correct?
Options

Question

A wave is represented by y = (0.002 mm) sin[(50 s⁻¹)t + (2 m⁻¹)x]. Which statement is correct?

G1 Physics · Accepted Answer

Step 1: From y = 0.002 mm sin(50t + 2x), ω = 50 s⁻¹ and k = 2 m⁻¹. Step 2: f = ω/(2π) = 25/π Hz. Also v = ω/k = 25 m s⁻¹ and A = 0.002 mm. Therefore only option C is correct.