Question

A photon has a wavelength of 3.8 × 10-7 meters, which is between visible and ultraviolet. Calculate the energy of this photon.

Answer 1

use the equation Energy of photon = h * c / wavelength

where h is Planck constant = 6.62607004 × 10-34 m2 kg / s

c is velocity of light in vacuum = 3.00 × 108 m/s and

wavelength value already you know

Answer 2

Energy of the photon is
`5.2* 10^(-19)` J.

Step-by-step explanation:

Energy of a photon (E) is given by the following equation-

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

Where h is the plank constant, c is the velocity of light and
`\lambda` is the wavelength of photon.

Hence,
`E=((6.626* 10^(-34)J.s)* (3* 10^(8)m/s))/(3.8* 10^(-7)m)`

So, E=
`5.2* 10^(-19)` J