A type of electromagnetic wave has wavelength 50 .
(i) Name the wave.
(ii) What is the speed of the wave in vacuum ?
(iii) State one use of this type of wave.
(i) X-rays.
(ii) Speed of the wave in vacuum is 3 x 108 m/*.
(iii) x-rays are used for determining fracture of bones hidden objects in customs at Airports.
