Question

calculate the wavelength frequency and wave number of a light wave whose period is 4
$\times 10 { - 10s}^{?}$
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Answer 1

Answer:

Explanation:

Frequency=1/Time period

                 =1/4*10^10

                 =2.5*10^9 s^-1

Wavelength=velocity of light/Frequency

                  =3*10^8/2.5*10^9

                =3/2.5*10^-1

                 =0.12m

Wave number=1/wavelength

                      =1/0.12

                     =8.33 s

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