EVERYDAY SCIENCE

Detailed explanation-1: -All of these electromagnetic waves (whether radio, visible or gamma) travel at the same speed. They all travel at the ‘speed of light’ through a vacuum, that is at 3 × 10 8 m s-1.

Detailed explanation-2: -Assertion :The basic difference between various types of electromagnetic waves lies in their wavelength or frequencies. Reason: Electromagnetic waves travel through vacuum with the same speed.

Detailed explanation-3: -They only differ from each other in wavelength. Wavelength is the distance between one wave crest to the next. Waves in the electromagnetic spectrum vary in size from very long radio waves the size of buildings, to very short gamma-rays smaller than the size of the nucleus of an atom.

Detailed explanation-4: -EM waves travel with the same speed in vacuum (or air) which is same as the speed of light ie. 3×108m/s.