Differentiate sound waves and light waves

CBSE Class 9 CBSE Class 9 Science
1
  1. Explain the concept of sonic boom.
  2. Differentiate sound waves and light waves.
2
  1. When an object travels with speed greater than that of sound, the speed is called a supersonic speed. Aircraft at supersonic speed produces shock waves and the pressure variation in such shock wave leads to a sharp and loud sound, called sonic boom
  2. Differences between sound waves and light waves are
Sound waves Light waves
They are longitudinal in nature. They are transverse in nature.
Speed is low, i.e. 330 m/s. Speed is very high, i.e. 3x108 m/s.