Question

What is the energy of a photon emitted with a wavelength of 448 nm?
O A. 2.97 x 10-22 J
O B. 4.44 x 10-19 J
O C. 8.91 x
10-23 J
O D. 1.48 x 10-27 J

Answer 1

Answer: B is the correct answer

Explanation:

Answer 2

The energy of a photon is 4.44×$10^{-19}$J for the wavelength of 448 nm.

So, option (B) is correct. This can be calculated by using the energy formula.

The energy of a photon:

The energy of a photon is said to be photon energy. It is directly proportional to the photon's electromagnetic frequency and inversely proportional to the wavelength. If the frequency of the photon is high then its energy is also high.

The energy of a photon, E=hc/λ

Given data:

Given that,

λ = 448nm

h= 6.63×$10^{-34}$J/s

Calculating the energy:

E = 6.63×$10^{-34}$×3×$10^8$/448×$10^-^9$

E = 4.44×$10^{-19}$ J

Hence option (B) is correct.

Therefore, the energy of a photon emitted with a wavelength of 448nm is  4.44×$10^{-19}$ J.

Learn more about the energy of photons here:

https://brainly.com/question/7957705

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