Questions

The Doppler effect or Doppler shift is the change in frequency or wavelength of a wave in relation to an observer who is moving relative to the wave source. 

BidhanNagar in Kolkata, West Bangal is popularly known as Salt Lake City.

Here Joystick, Mouse and Scanner are Input devices through which data is given to the computers. But Headphones are output devices through which sound comes as an output from the computer or any devices.

Rights guaranteed by law, is the best description of Civil liberties.

Civil liberties are also called as personal freedoms. They are personal guarantees and freedoms that the government cannot abridge, either by law or by judicial interpretation, without due process.