Question

What is the difference between Sound wave and Light waves? Or, Write the five differences between Sound wave and Light waves?

Answer 1

Some main differences between Sound wave and Light wave are given below —

Sound wave	Light waves
Sound waves are mechanical waves.	Light waves and radio waves are electromagnetic waves.
Sound waves need a material medium to travel.	Light waves and radio waves do not need any material medium for their propagation.
Sound waves cannot travel through vacuum.	Light waves and radio waves can travel through vacuum.
Sound waves are due to the vibrations of the material particles of the medium.	Light waves and radio waves are due to the oscillating electrical and magnetic fields.
Sound waves travel with low speeds: about 344 m/s at 20°C in air.	Light waves and radio waves travel with the velocity of light (3 x 108 m/s).