Question

Green light can have a wavelength of 512 nm. The energy of a photon of this light is

Answer 1

Answer:

$E = 3.88 * 10^{-17} J$

Explanation:

Energy is directly proportional to frequency and it is given as:

E = hf

where h = Planck's constant

f = frequency

To get frequency, we use the formula of speed:

c = λf

where c = speed of light

λ = wavelength

=> f = c/λ

Therefore, the energy of the photon will be:

E = hc/λ

$E = \frac{6.626 * 10^{-34} * 3 * 10^{8} }{512 * 10^{-9} }$

$E = 3.88 * 10^{-17} J$

The energy of the photon is $3.88 * 10^{-17} J$