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Electromagnetic spectrum calculation practice problems
Electromagnetic spectrum calculation practice problems
Calculate the energy carried by a photon with a wavelength of 609 nm.
Give your answer in electron Volts to 3 significant figures with the most appropriate metric prefix.
E
P
T
G
M
k
m
μ
n
p
f
a
eV
Show equation
C = λ × f
E = h * C / λ
Show constants
C = 3×10
^{8}
ms
^{-1}
h = Planck's constant = 4.13566733×10
^{-15}
eVHz
^{-1}
Show metric prefix table
Power of 10
Prefix
Symbol
10
^{-18}
atto
a
10
^{-15}
femto
f
10
^{-12}
pico
p
10
^{-9}
nano
n
10
^{-6}
micro
μ
10
^{-3}
milli
m
10
^{0}
(base unit)
10
^{3}
kilo
k
10
^{6}
mega
M
10
^{9}
giga
G
10
^{12}
tera
T
10
^{15}
peta
P
10
^{18}
exa
E
Hint
It is easy to get the right number but be off by or more orders of magnitude. Be sure that all of your numbers are in the same base unit before performing the necessary multiplication and devision. The speed of light is given in m/s and Planck's constant is given in eV/Hz.
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