Which of these is the most likely use of an electromagnetic wave which has frequency lesser than ultraviolet rays but greater than infrared radiations?

heat food safely

make objects visible to humans

transmit radio and cellular phone signals

detect the location of objects which emit heat

Question

Which of these is the most likely use of an electromagnetic wave which has frequency lesser than ultraviolet rays but greater than infrared radiations?

 heat food safely

 make objects visible to humans

 transmit radio and cellular phone signals

 detect the location of objects which emit heat

anonymous · Answer

This is an easy one
can you tell me in the electromagnetic spectrum, what comes before UV rays and after IR rays? (talking frequency wise)