Question

What is the no. of photons of light with a wavelength of 2000 pm that provide 1 Joule of energy ? Please give the right answer and I will mark you the brainliest !

Answer 1

Explanation:

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Answer 2

E = nhc/w

where E is the energy

n is the no. of photons

h is the Planck's constant (6.626×10^-34 m^2kg/s )

w is the wavelength

c is the speed of light (3×10^8 m/s)

1 = n × 6.626 ×10^-34 ( 3×10^8)

2000 × 10^-12

2000 = [6.626 × 3 × 10^8 × 10^(-34+22)]n

2000 = 6.626 × 3 × 10^-14

n

2000 × 10^14 = 19.878 n

2000 × 10^14 = n

19.878

100.6 × 10^14 = n

I suppose this is the answer and I hope the explanation and everything else was up to the mark.

With regards

anonymous819621