λ1 = 100 cm, λ2 = 90 cm and velocity of sound = 396 m/s. The number beats (in Hz) are λ1 = 100 cm λ2 = 90 cm and velocity of sound = 396 m/s. The number beats (in Hz) are November 5, 2020 Category: Arihant Physics by D.C Pandey , Chapter 16 - Waves , Volume 1 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related