Considering the change of units and the definition of wavelength, the light had a wavelength of 0.76 nm.
Wavelength
Wavelength is the minimum distance between two successive points on the wave that are in the same state of vibration. It is expressed in units of length (m).
This case
The light had a wavelength of 7.60×10⁻¹⁰ m.
To perform in this case the conversion of units, you must first know that 1 meter is equal to 10⁹ nm. So, if 10⁹ nm is 1 m, how many nm equals 7.60×10⁻¹⁰ m?
1 m ⇒ 10⁹ nm
7.60×10⁻¹⁰ m ⇒ x
So: [tex]x=\frac{7.60x10^{-10} mx10^{9} nm}{1 m} [/tex]
Solving:
x= 0.76 nm
In summary, the light had a wavelength of 0.76 nm.
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