A sound wave travels through air at 20°C. If its frequency is 500 Hz, what is its approximate wavelength?
Q1. A sound wave travels through air at 20°C. If its frequency is 500 Hz, what is its approximate wavelength?
Answer: 0.68 m
Explanation: Using v = fλ, with v ≈ 340 m/s at 20°C, we get λ = v/f = 340/500 = 0.68 m. Option C is incorrect due to wrong calculation.