The velocity of electromagnetic waves in free space is 3 × 10^8 m/sec. The frequency of a radio wave of wavelength 150 m, is is The velocity of electromagnetic waves in free space is 3 × 10^8 m/sec. The frequency of a radio wave of wavelength 150 m November 27, 2020 Category: AIIMS Last 24 Years Solved 1996 - 2019 Physics and Chemistry Video Solutions , Chapter 28 - Electromagnetic Waves , Physics , Facebook Messenger WhatsApp Share this:TwitterFacebook Related