A certain part of the electromagnetic spectrum ranges from 200 nm to 400 nm.What is the lowest frequency associated with this portion of the spectrum? (c = 3.00 × 10⁸ m/s) A)1.50 × 10¹⁴ Hz B)7.50 × 10¹³ Hz C)7.50 × 10¹⁴ Hz D)7.50 × 10¹⁵ Hz E)1.50 × 10¹⁵ Hz

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Quizplus · Accepted Answer

The lowest frequency corresponds to the longest wavelength, which is 400 nm. The frequency is given by c/λ, so the lowest frequency is:f = c/λ = (3.00 × 10^8 m/s) / (400 × 10^-9 m) = 7.50 × 10^14 Hz

A Certain Part of the Electromagnetic Spectrum Ranges from 200