Question

cculculate the energy of a photon of sodium light of wavelength 2x 10^-16m?
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Answer 1

Answer:

energy of photon = h c λ

h is Planck's constant

$6.626 \times 10 ^{ - 34}$

speed of light c is

$3 \times {10}^{8}$

wavelength λ is

$2 \times {10}^{ - 16} m$

in angstorm

$2 \times {10}^{ - 6}$

$= 6.626 \times {10}^{ - 34} \times 3 \times {10}^{8} \times 2 \times {10}^{ - 6}$

$= 3.975 \times {10}^{ - 31}$

energy of photon is 3.975×10^-³⁴

hope this helps.❤