The rate at which photons from the lamp are associated with the sodium light is 2.96×.
Power of the sodium lamp, P=100 W
The wavelength of the emitted sodium light, λ=589 nm = 589×m
Planck's constant, h=6.626×Js
Speed of light, c= 3×m/s
(a)The energy per photon associated with the sodium light is given as
E =hcλ
E =6.626××3×108/589×=3.37×J
E ==2.11eV
(b)Number of photons delivered to the sphere = n
The equation for power can be written as P=nE
∴n =PE
=1003.37× =2.96×photons/s
Therefore, every second, 2.96× photons are delivered to the sphere.
To know more about photons refer to: brainly.com/question/26412768
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