Question

the number of photons of light of wavelength 7000 angstrom equivalent to 1 joule are

Answer 1

Energy of 1 photons =h*c/wavelength
So no of photons =1/energy of one photon
Now u can solve

Answer 2

Answer:

Energy = n × hc/λ

n = Energy × λ / (hc)

= 1 J × 7000 × 10^-10 m / (6.626 × 10^-34 J s × 3 × 10^8 m/s)

= 3.5 × 10^18 photons

= 3.5 Quintillion photons

Number of photons = 3.5 Quintillion

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Explanation:

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