Question

Gamma rays and radio waves travel with the same velocity in free space. Distinguish between them in terms of their origin and the main application.

Answer 1

	Gamma rays	Radio waves
Origin:	Nuclear decay	Lightning
	From the hottest and most energetic objects in the universe, such as neutron stars, pulsars, supernova explosions, and regions around black holes.	From broadcast radio towers, cell phones, and radars.
Application:	It is used in radiotherapy, sterilisation, and disinfection.	It is used in fixed and mobile radio communication, radar and other navigation systems, communications satellites, and computer networks.