E=hc/l
E=
E=(6.626 x 10-34 J s)(3.0 x 108m/s )=2.88 x 10-19J6.90 x 10-7mAnswer: [tex]0.02130\times 10^{-17}Joules[/tex]
Explanation:
[tex]E=\frac{hc}{\lambda}[/tex]
E= energy
h = Planck's constant = [tex]6.626\times 10^{-34}Js[/tex]
c = speed of light =[tex]3\times 10^8ms^{-1}[/tex]
[tex]\lambda[/tex] = Wavelength of radiation = 933 nm =[tex]933\times 10^{-9}m[/tex]
Now put all the given values in this formula, we get
[tex]E=\frac{6.626\times 10^{-34}Js\times 3\times 10^8ms^{-1}}{933\times 10^{-9}m}[/tex]
[tex]E=0.02130\times 10^{-17}Joules[/tex]
Thus energy of a 933 nm wave is [tex]0.02130\times 10^{-17}Joules[/tex]
