Question

Electromagnetic Radiation travels through vacuum at a speed of ______m/s

Answer 1

Hint: Electromagnetic radiation (EMR) is a term used in physics to describe the waves (or quanta, photons) of the electromagnetic field that propagate over space and convey electromagnetic radiant energy. Radio waves, microwaves, infrared, (visible) light, ultraviolet, X-rays, and gamma rays are all examples of electromagnetic radiation. The electromagnetic spectrum includes all of these wavelengths.

Complete answer:
At the same time, EM radiation shows both wave and particle characteristics (see wave-particle duality). Many experiments have verified both wave and particle properties. When measuring EM radiation over long timeframes and distances, wave features become more obvious, whereas particle characteristics become more apparent when measuring tiny durations and distances. The frequency of oscillation or the wavelength of an electromagnetic wave can be used to determine its position within the electromagnetic spectrum.
In vacuum, the speed of light (electromagnetic radiation) remains constant at $ 3.00{\text{ }} \times {\text{ }}{10^8}{\text{ }}m{s^{ - 1}} $ and is independent of the wavelength. Electromagnetic radiation is a kind of energy that is usually referred to as light. It travels through a vacuum at the same speed, which is approximately $ 3.00{\text{ }} \times {\text{ }}{10^8}{\text{ }}m{s^{ - 1}} $ . In a vacuum, the speed of electromagnetic waves is determined by the source of radiation. As we progress from gamma rays to radio waves, the frequency falls while the wavelength rises, allowing the product to remain constant. In vacuum, the speed of electromagnetic radiation remains constant. As we progress from gamma rays to radio waves, the frequency declines while the wavelength rises, resulting in a constant product.

Note:
According to quantum physics, EMR is made up of photons, which are uncharged elementary particles with zero rest mass and are the quanta of the electromagnetic field, which are responsible for all electromagnetic interactions. Quantum electrodynamics is the theory that describes how electromagnetic radiation interacts with matter at the atomic level. Quantum phenomena, such as the transfer of electrons to lower energy states in an atom and black-body radiation, provide additional sources of EMR.