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Yanuarij

Light emitted from a sodium lamp has a wavelength of 300 nm. Calculate the frequency and wavenumber of emitted light.

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87 cents Marja
Answer:

The wavelength of yellow light is 580nm = 580×10

−9

m.

The frequency of yellow light,

ν=

λ

c

=

580×10

−9

m

3.0×10

8

m/s

=5.17×10

14

/s.

The wave number of yellow light,

ν

ˉ

=

λ

1

=

580×10

−9

m

1

=1.72×10

6

/m.

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