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Makovka662 [10]
3 years ago
7

Calculate the frequency

Chemistry
2 answers:
Artist 52 [7]3 years ago
8 0
<span>Answer: 8.90 x 10¹⁴ Hz
</span><span />

<span>Explanation:
</span><span />

<span>1) Frequency (f) and wavelength (λ) are inversely related.
</span><span />

<span>2) The equation is: f = c / λ, where c is the speed of light
</span><span />

<span>3) c = 3 x 10⁸ m/s in vacUum
</span><span />

<span>4) To make the calculations you need yo use the conversion between nanometers and meters:
</span><span />

<span>1 meter = 10⁹ nanometer


</span><span>5) Calculations:</span>
<span /><span>
f = 3 x 10⁸ m/s / 337.1 x 10⁻⁹ m = 8.90 x 10¹⁴ Hz
</span><span />

<span>Hz is hertz, the SI unit for frequency and it means cycles per second, that is number of waves per second.


</span>
Ber [7]3 years ago
3 0
Given: wavelength of Nitrogen laser (∧) = 337.1 nm = 337.1 X 10^-9 m

We know that, Energy of photon (E) = hc/∧ = hv
where, v = frequency of photon and c = speed of light = 3 X 10^8 m/s

Thus, v = c/∧ = (3 X 10^8)/ (337.1 X 10^-9) = 8.899 X 10^14 s-1.

Answer: F<span>requency of nitrogen laser = </span>8.899 X 10^14 s-1.
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