Question

Will give 20 points to best answers

Answer 1

a. 3.8 x 10¹⁴ s⁻¹

Step-by-step explanation:

For the first line,

we have wavelength = λ = 7.9 x 10⁻⁷ m

We know that , speed of light , c is given by:

c = λ x ν

Where λ is wavelength of the line and ν is the frequency

So , the frequency , ν = c / λ = 3 x 10⁸ / 7.9 x 10⁻⁷ = 3.79 x 10¹⁴ s⁻¹

≈ 3.8 x 10¹⁴ s⁻¹

Therefore the frequency is 3.8 x 10¹⁴ s⁻¹ .