Question

The energy of a photon from certain wavelength is 1.37 x 10^-20 j, what is the frequency in hz?

Answer 1

Answer:

frequency = 2.07 x 10¹³ Hz

Explanation:

To find the frequency of the photon, you need to use the following equation:

E = hv

In this formula,

-----> E = energy (J)

-----> h = Planck's Constant (6.626 x 10⁻³⁴ J*s)

-----> v = frequency (Hz)

Since you have been given values for two of the variables (in the correct units), you can plug them into the equation and simplify to find the frequency.

E = hv                                                       <----- General Equation

E = (6.626 x 10⁻³⁴ J*s)v                           <---- Plug in Planck's Constant

1.37 x 10⁻²⁰ J = (6.626 x 10⁻³⁴ J*s)v        <----- Plug in energy (given)

2.07 x 10¹³ = v                                        <----- Divide both sides by 6.626 x 10⁻³⁴