The wavelength of a certain portion of microwaves is 40 mm. What is its frequency? A)...

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25) The wavelength of a certain portion of microwaves is 40 mm. What is its frequency? 25) A) 4.0 GHz B) 40 GHz C) 7.5 GHz D) 75 GHz E) 0.75 GHz

science physics

Answer 1

Answer #1

Light moves with a speed ,c = 3 x 10⁸ m/s.

wavelength= c/frequency

λ=c/ ν

v=c/λ

=3 x 10⁸ / 40x10^-3 m

Frequency,v=7.5x10⁹ Hertz=7.5GHz

Answer ,C) 7.5GHz

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Answer 2

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