Calculate the energy of a photon of ultraviolet light of wavelength 200nm
200n,
To calculate the energy of a photon of light, you can use the following formula:
E = h * c / λ
Where:
E is the energy of the photon,
h is Planck's constant (6.626 x 10^-34 Js),
c is the speed of light in a vacuum (3.00 x 10^8 m/s),
λ is the wavelength of light.
In this case, the wavelength given is 200 nm. However, the formula requires wavelength to be in meters, so we need to convert it first.
1 nm (nanometer) is equal to 1 x 10^-9 meters. Therefore, to convert 200 nm to meters, we divide 200 by 10^9:
200 nm / (1 x 10^9 nm/m) = 2 x 10^-7 m
Now that we have the wavelength in meters, we can substitute it into the formula:
E = (6.626 x 10^-34 Js) * (3.00 x 10^8 m/s) / (2 x 10^-7 m)
By multiplying the values and dividing, we can find the energy of the photon.