Question

which of the following is not a type of wave? 1. E.M Wave 2. Wavelength 3. Mechanical Wave 4. Non Mechanical Wave​

Answer 1

Explanation:

Radio waves, X-rays, gamma rays all lie in the electromagnetic spectra, at different frequencies and wavelength regions.

However Earthquake P-waves are not electromagnetic waves.

Mechanical Wave

A mechanical wave is a wave that is an oscillation of matter and is responsible for the transfer of energy through a medium.

The distance of the wave’s propagation is limited by the medium of transmission. In this case, the oscillating material moves about a fixed point, and there is very little translational motion. One intriguing property of mechanical wave is the way they are measured, which is given by displacement divided by wavelength

Electromagnetic Wave

Electromagnetic waves are created by a fusion of electric and magnetic fields. The light you see, the colours around you are visible because of electromagnetic waves.

non mechanical wave

Non-mechanical waves are waves that do not need a medium for propagation.

Mechanical waves cannot travel through vacuum Non-mechanical waves can travel through vacuum