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Select the correct answer. A light wave travels at a speed of 3.0 × 108 meters/second. If the wavelength is 7.0 × 10-7 meters, what is the frequency of the wave? A. 2.5 × 10-14 hertz B. 4.3 × 1014 hertz C. 1.7 × 10-14 hertz D. 5.1 × 10-14 hertz

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Kazeemsodikisola

Answer:

Explanation:

Given that speed of light is

c=3×10^8m/s

Wavelength λ is give as

λ=7×10^-7

Wavelength formula is given as

c=fλ

Then,

f=c/λ

f=3×10^8/7×10^-7

f=4.29×10^14Hz

Which is approximately

f=4.3 ×10^14Hz

The correct option is B.

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