Question

(ii) State two practical uses of microwaves. [2]
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Answer 1

=To cook food as it cause water and fat molecules to vibrate, which makes the substances hot.

=Mobile phones use microwaves, as they can be generated by a small antenna.

=Wifi also uses microwaves.

=Fixed traffic speed cameras.

=For radar, which is used by aircraft, ships and weather forecasters.

write any two you like.