Calculate the number of photons that would be contained in a laserpulse with a wavelength of 287 nm that contained 4.35 mJ of energy. Plank's constant is 6.626 x 10-34 J•s. 2.87 x 10-7 photons 3.00 x 108 photons 1.59 x 10-16 photons 6.28 x 1015 photons 7.41 x 1012 photons

3.46 ⋅ 10 − 19 J

Explanation:

The energy of a photon is proportional to its frequency,

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and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be