Respuesta :

Answer:

2.5 x10^14

Explanation:

speed of photon = 3 x10^8

wavelength given = 1.2 x 10^-6

Frequency = ?

By the formula,

                           F =  [tex]\frac{Velovity}{Wavelength}[/tex]

 Put the values you will get the answer 2.5 x 10^14

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