Question

The energy of one photon of light is related to wavelength (λ) of light using the equations: For green light with a wavelength of 454 nm, the energy (in joules) can be calculated using the following values: Plank's constant (h) = 6.626 x 10-34 J*s Speed of light (c) = 2.998 x 108 m/s Wavelength (λ) = 454 x 10-9 m. Calculate the energy (in J) of a green photon and enter your answer using three significant figures and exponential notation. (For example, 456000 would be entered as 4.56E5.)

Answer 1

`E = 4.37 * 10^(-19) J`

Step-by-step explanation:

As we know that the wavelength of the photon is given as

`\lambda = 454 nm`

`h = 6.626 * 10^(-34) Js`

`c = 2.998 * 10^8 m/s`

now we have

`E = (hc)/(\lambda)`

now plug in all data in it

`E = ((6.626 * 10^(-34))(2.998 * 10^8))/(454 * 10^(-9))`

now we know that

`E = 4.37 * 10^(-19) J`