Answer:
8.969×10²⁶ photons
Explanation:
From the question,
Using,
E = hc/λ........................... Equation 1
Where E = Energy of the photon, h = Planck's constant, c = speed of light, λ = wave length of the photon.
Given: h = 6.626×10⁻³⁴ J.s, c = 3×10⁸ m/s, λ = 0.297 m
Substitute into equation 1
E = 6.626×10⁻³⁴(3×10⁸)/0.297
E = 6.69×10⁻²⁵ J.
The energy of the photon in one seconds = 6.69×10⁻²⁵ J/s
If the power of the microwave oven = 600 J/s
Then,
Number of photons emitted per seconds = 600/(6.69×10⁻²⁵)
Number of photons emitted per seconds = 8.969×10²⁶ photons
