contestada

How much energy does a 930 nm wave of light have? (The speed of light in a
vacuum is 3.00 x 108 m/s, and Planck's constant is 6.626 x 10-34 Jos.)
A. 1.85 x 10-31 J
B. 4.68 x 1018 j
C. 2.14 x 10-19 J
D. 4.21 x 1035 J

Respuesta :

Answer:

[tex]E=2.14\times 10^{-19}\ J[/tex]

Explanation:

We have,

Wavelength of a light is 930 nm

It is required to find the energy of a wave of light. The energy of a wave is given in terms of following as :

[tex]E=\dfrac{hc}{\lambda}\\\\E=\dfrac{6.626\times 10^{-34}\times 3\times 10^8}{930\times 10^{-9}}\\\\E=2.14\times 10^{-19}\ J[/tex]

So, the energy of the wave is [tex]2.14\times 10^{-19}\ J[/tex]