Questions

The2022 Commonwealth Games, officially known as theXXII Commonwealth Gamesand commonly known asBirmingham 2022, will be an internationalmulti-sport eventfor members of theCommonwealththat will be held inBirmingham,England.The Games are expected to take place between 27 July and 7 August 2022. The city was announced as the host at at a press conference at the Arena Academy in Birmingham on 21 December 2017

Sunspots are a magnetic phenomenon on the Sun.

The reason a sunspot appears dark is that they are cooler than the rest of the Sun's surface and also the gas inside the spot where the magnetic field is strongest is only emitting about 1/4 as much light as from the rest of the solar surface. 

The reason for transmitting data over optical fibers, is because the speed of data transmission through optical wires are equal to the speed of light. The intense speed of data transfer speed, has lead to the use of optical fibers. The optical fiber uses the technology of transferring light beams, from one end to the other end of optical cables. The attenuation in optical fiber is due to Scattering. The reason why scattering is caused, due to the folding, in the wire.