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3 years ago

PLEASE HELP ME WITH THIS ONE QUESTION

Physics

1 answer:

krok68 [10]3 years ago

5 0

Answer:

The correct option is D.

Explanation:

The wavelength of the photon can be calculated with the following equation:

$E = h\frac{c}{\lambda}$

Where:

E: is the energy of the photon = 2.90 eV

h: is the Planck's constant = 6.62x10⁻³⁴ J.s

c: is the speed of light = 3x10⁸ m/s

λ: is the wavelength

Hence, the photon's wavelength is:

$\lambda = \frac{hc}{E} = \frac{6.62 \cdot 10^{-34} J*s*3.0 \cdot 10^{8} m/s}{2. 90 eV*\frac{1.6 \cdot 10^{-19} J}{1 eV}} = 428 nm$

Therefore, the correct option is D.

I hope it helps you!

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