Which of the following electromagnetic wave has the longest wavelength?
Answer Details
Radio waves have the longest wavelength among the given options. Electromagnetic waves are waves that are created by oscillations in electric and magnetic fields. The wavelength of an electromagnetic wave is the distance between two consecutive peaks or troughs in the wave. The different types of electromagnetic waves have different wavelengths and frequencies, and they are arranged in a spectrum according to their wavelengths.
Radio waves have the longest wavelength and the lowest frequency among the electromagnetic waves. They are used for communication, such as in radio and television broadcasting. Gamma rays, on the other hand, have the shortest wavelength and highest frequency among the electromagnetic waves, and are often produced by radioactive decay or nuclear reactions. Infrared and ultraviolet rays have intermediate wavelengths and frequencies between radio waves and gamma rays. Infrared waves are often associated with heat radiation, while ultraviolet rays are known for their ability to cause sunburn and skin damage.