Answer :
Final answer:
A high-frequency machine generates microwaves, which are the highest-frequency electromagnetic waves produced by currents in macroscopic circuits. These microwaves are commonly used in microwave ovens to efficiently heat food.
Explanation:
A high-frequency machine generates microwaves, which are the highest-frequency electromagnetic waves produced by currents in macroscopic circuits. Microwaves have frequencies ranging from about 10⁹ Hz to nearly 10¹² Hz and correspond to short wavelengths compared to other radio waves.
High-frequency machines that generate microwaves are commonly used in microwave ovens to efficiently heat food. The high-frequency microwaves are absorbed more strongly by food, allowing the energy to be directly transferred into the food.
It is important to note that microwaves at these frequencies do not produce ionization with single photons and do not have the hazards of higher frequency radiation, such as ultraviolet rays.
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