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In a EM wave the electric field oscillates sinusoidally at a frequency of 2 × 10^10

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In a EM wave the electric field oscillates sinusoidally at a frequency of 2 × 1010 What is the wavelength of the wave?

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Given : v = 2 × 1010 Hz, c = 3 × 108 m

To find : Wavelength (λ) 

Formula : c = vλ 

Calculation : From formula,

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