A photon has a wavelength of approximately 2 x 10-7m. What is the energy, in joules, associated with this photon?
1 answer:
Answer:
E = 9.95×10⁻¹⁹ J
Explanation:
Given data:
Wavelength = 2×10⁻⁷ m
Energy of photon = ?
Solution:
Formula:
E = hc/λ
h = 6.63×10⁻³⁴ Js
c = 3×10⁸ m/s
by putting values,
E = 6.63×10⁻³⁴ Js × 3×10⁸ m/s / 2×10⁻⁷ m
E = 19.89×10⁻²⁶Jm / 2×10⁻⁷ m
E = 9.95×10⁻¹⁹ J
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