Question

Calculate the frequency and wave number of radiation with wavelength 480nm

Answer 1

Convert your wavelength into meters.

Divide the speed of light, ~300000000 m / s, by the wavelength in m. This gives you the wave's frequency.

Multiply the frequency by Planck's constant, 6.626 x 10-34. The result is the waves energy in J s.

Answer 2

Answer:

λ=480nm=480×10

−9

m [∵1nm=10

−9

m]

c=3×10

8

m/sec

Frequency, v=

λ

c

=

480×10

−9

m

3×10

8

ms

−1

=6.25×10

14

s

−1

=6.25×10

14

I think this is the answer

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