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

Question

Quizplus · Accepted Answer

The frequency of electromagnetic radiation is given by the equation:

f = c/λ

where f is frequency, c is the speed of light, and λ is wavelength.

In this case, the range of wavelengths is from 200 nm to 400 nm. To find the lowest frequency, we need to use the longest wavelength in this range:

λ = 400 nm = 4.00 × 10^-7 m

Substituting into the equation:

f = c/λ = (3.00 × 10^8 m/s) / (4.00 × 10^-7 m) = 7.50 × 10^14 Hz

Therefore, the answer is choice C: 7.50 × 10^14 Hz.

A Certain Part of the Electromagnetic Spectrum Ranges from 200