Name the waves (a) of lowest wavelength, (b) used for taking photographs in dark, (c) produced by the changes in the nucleus of an atom, (d) of wavelength nearly 0.1 nm.
(a) Arrange the following radiations in the order of their increasing wavelength :
X rays, infrared rays, radio waves, gamma rays, and micro waves.
(b) Name the radiation which is used for satellite communication.