Respuesta :
v = f.(wavelength)
Because photons travel at the speed of light, v = c = 2.998x10^8m/s
2.998x10^8 = f x 11.56
f = 25934256.06Hz
E = hf = 6.626x10^-34 x 25934256.06
= 1.718403806x10^-26 = 1.718x19^-26 J (3sf)
Because photons travel at the speed of light, v = c = 2.998x10^8m/s
2.998x10^8 = f x 11.56
f = 25934256.06Hz
E = hf = 6.626x10^-34 x 25934256.06
= 1.718403806x10^-26 = 1.718x19^-26 J (3sf)
Answer : The energy of a photon is, [tex]1.718\times 10^{-26}J[/tex]
Explanation :
Formula used :
[tex]E=\frac{h\times c}{\lambda}[/tex]
where,
E = energy = ?
h = Planck's constant = [tex]6.626\times 10^{-34}Js[/tex]
c = speed of light = [tex]2.998\times 10^8m/s[/tex]
[tex]\lambda[/tex] = wavelength = 11.56 m
Now put all the given values in the above formula, we get the energy.
[tex]E=\frac{(6.626\times 10^{-34}Js)\times (2.998\times 10^8m/s)}{11.56m}[/tex]
[tex]E=1.718\times 10^{-26}J[/tex]
Therefore, the energy of a photon is, [tex]1.718\times 10^{-26}J[/tex]
