Question

The kinetic energy of a moving
election is 3.9x10^23J.Calculate
the wavelength of Electron.
​

Answer 1

Answer:

The equation that relates wavelength, frequency, and speed of light is

c=λ⋅ν

c=3.00×108 m/s (the speed of light in a vacuum)

λ = wavelength in meters

ν = frequency in Hertz (Hz) or 1s or s−1.

So basically the wavelength times the frequency of an electromagnetic wave equals the speed of light.

FYI, λ is the Greek letter lambda , and ν is the Greek letter nu (it is not the same as a v).

To find wavelength (λ), the equation is manipulated so that λ=cν.