Calculate the frequency of each of the following wavelengths of electr

Talamancoeb 2021-12-19 Answered
Calculate the frequency of each of the following wavelengths of electromagnetic radiation.
A) 632.8 nm (wavelength of red light from a helium-neon laser) Express your answer using three significant figures.
B) 503 nm (wavelength of maximum solar radiation) Express your answer using three significant figures.
C) 0.0520 nm (a wavelength used in medical X rays) Express your answer using three significant figures.
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Expert Answer

Cassandra Ramirez
Answered 2021-12-20 Author has 30 answers
Step 1
Given: We have to calculate the frequency of each of the following wave length of electromagnetic radiation.
A) Wave length (λ)=632.8nm=632.8×109m.
Velocity (c)=3×108ms
Frequency (ν)=?
Now, C=λν
ν=cλ=3×108632.8×109=4.74×1014Hz.
Hence, the frequency is 4.74×1014Hz
B) wave length (λ)=503nm=503×109m
velocity (c)=3×108ms
Frequency (ν)=?
Now, ν=Cλ=3×108503×109=5.96×1014Hz
Hence, the frequency is 5.96×1014Hz
c) wave length (λ)=0.052nm=0.052×109m
velocity (c)=3×108ms
Frequency (ν)=?
Now, ν=cλ=3×1080.052×109=5.77×1018Hz
Hence, the frequency is 5.77×1018Hz

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Jenny Sheppard
Answered 2021-12-21 Author has 35 answers
b) We know energy of photon is given by:
E=hν=hcλ
where, h=planles constant
c=speed of light
λ=wave length
ν=frequency
h=6.626×1034Js
c=3×108ms [on 2.998×108ms]
λ=503nm=5.03×107m
Putting the values
E=6.626×1034×3×1085.03×107J
E=19.878×10195.03
E=3.95×1019J

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