Name the electro-magnetic waves with their frequency range, produced in  (a) some radioactive decay  (b) sparks during electric welding  (c) TV remote

 

 

 

 
 
 
 
 

Answers (1)

a) Gamma rays (1019 to 1024 Hz)

b) UV rays (1015 to 1017 Hz)

c) Infrared rays (1012 to 1014 Hz)

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