Respuesta :

Serpentiel
[tex]\lambda = \frac{c}{\nu} = \frac{3 \cdot 10^8}{2.1 \cdot 10^9} = \frac{1}{7} \approx 0.142857 \approx 0.14 \ m.[/tex]
Uraniumdavid

Answer:

∆ = 0.143 m

Explanation:

Using the information given above

Let f = frequency= 2.1 ×10^9 hz

Let c be the Speed of light = 3×10^8 m/s

Let ∆ be Wavelength which is unknown

∆ = c/f

= 3× 10^8/2.1 × 10^9

= 0.143 m