Calculate no. of photons of light with a wavelength of 4000 pm that provides 1 J of energy.
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Answer:
0.2 x
Explanation:
E = h c n/ λ (n is number of photons)
n = E λ/ h c
= 1 x 4000 x / 6.68 x x 3 x
= 0.2 x photons
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