Three electromagnetic waves X , Y , and Z are identified by their production mechanisms as follows: X : Produced during the radioactive decay of a nucleus Y : Produced by the vibration of atoms and molecules Z : Produced by a magnetron valve Which of the following represents the correct increasing order of their wavelengths in vacuum?

Step-by-step solution

Wave X is produced by the radioactive decay of a nucleus, which identifies it as a gamma ray. Wave Y is produced by the vibration of atoms and molecules, which identifies it as an infrared ray. Wave Z is produced by a magnetron valve, which identifies it as a microwave. The electromagnetic spectrum, in order of increasing wavelength, is: gamma rays Therefore, the increasing order of their wavelengths is X Answer: X < Y < Z