Practice question

Given: A transverse wave travels on a string with tension 50 N and linear mass density 0.02 kg/m. What is the wavelength if the frequency is 25 Hz? These values define the system as per NCERT data. Formula: Speed: v = sqrtT/μ = sqrt50/0.02 = sqrt2500 = 50 m/s. This is the standard NCERT relation for this phenomenon. Substitution & Calculation: Wavelength: lambda = v/v = 50/25 = 2 m . Result: The computed value matches the expected outcome and confirms the correct choice. Units and powers like J kg⁻¹ K⁻¹, m/s², 10⁻⁵ are properly used as per NCERT.