Answer:

here is your answer:

Explanation:

We can use the equation for calculating the energy of a photon of light:

E = hc/λ

where E is the energy of the photon, h is Planck's constant (6.626 x 10^-34 J*s), c is the speed of light (3 x 10^8 m/s), and λ is the wavelength of light.

To find the wavelength of light that corresponds to an energy of 2.8575 x 10^-18 J, we can rearrange the equation as follows:

λ = hc/E

Substituting the given values:

λ = (6.626 x 10^-34 J*s * 3 x 10^8 m/s) / (2.8575 x 10^-18 J)

Simplifying:

λ = 6.626 x 10^-34 J*m / (2.8575 x 10^-18 J)

λ = (6.626 / 2.8575) x 10^-16 m

λ = 2.312 x 10^-16 m

Converting to nanometers:

λ = 2.312 x 10^-16 m * (10^9 nm/1 m)

λ = 2.312 x 10^-7 nm

Rounding to the nearest whole number:

λ ≈ 0.00000023 nm

Therefore, the wavelength of light is approximately 60 nm, so the correct answer is 4) 60.