The E.M. wave with shortest wavelength among the following is

Step-by-step solution

If we look at the spectrum of electromagnetic waves then the order of a wavelength is, λ g a m m a < λ X - r a y < λ U V   r a y s < λ V i s i b l e < λ I n f r a r e d < λ M i c r o w a v e < λ R a d i o , so from the above spectrum the wavelength of gamma rays is minimum and then the wavelength of a radio wave is maximum, so the shortest wavelength is for gamma-rays.