Science, asked by afreensidd2002, 1 year ago

the number of photons of light of wavelength 7000A

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Answered by yillipillamalathi

4

1A = 1.0^-10m .. .. λ = 7000A = 7000^-10 m .. .. λ = 7.0^-7 m
Energy of each photon is given by Planck's equation .. E = hc/λ
Let N = number of photons

N x (hc/λ) = 1.0 J.

N = 1 λ/hc .. .. 7.0^-7 / (6.625^-34 x 3.0^8 m/s) .. .. ►N = 3.52^18

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