## Question

###### How many photons are produced in a laser pulse of 0.218 j at 683 nm I-CHE...

how many photons are produced in a laser pulse of 0.218 j at 683 nm

I-CHE 106 - Fall19 - BROOME > Activities and Due Dates > HW 6 Optional Assignment Score: 977/1300 Resources Question 1 of 13 > How many photons are produced in a laser pulse of 0.218 J at 683 nm? photons: 6.34466178 x10-20 obouilvo career privacy policy forms of use Contact

## Answers

. Ans - Güven data - Energy = 0.2185 (total energy produced by Joser pulse) Warelength (X) = 683 nm : = 683x10-9 m Calculate the energy of one photon - E = hic h = Planck's constant = 6.626X10 34 IS c= speed of light = 3x108 msai € = 6.626 X10-34 J5 x 34109 ms-' 683X10-9 m 17 E = 0.02910x 10 J E = 2.910x10!! ( Energy for one photon) Total energy produced by laser puse = 0.2185 No. of photons = Total energy produced by laser pulse Energy of one photon 0.218 J 2.910x10191 = 0.07491x1019 = 7.491xjék So, the no. of photons produced is 7.491x102"

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