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Wavelength of Microwave Oven microwaves

c = fl

where

c = speed of electromagnetic radiation = 3 x 108 m/s

f = frequency of the waves = 2.45 GHz = 2.45 x 109 Hz

l = wavelength of the microwaves

l = c/f

= 3 x 108 / 2.45 x 109

= 0.12 m or 12 cm ANS