Answer:
3.4 x 10⁻¹⁹J
Explanation:
Given parameters:
Wavelength = 585nm
Unknown:
Frequency and energy of the wave = ?
Solution:
The frequency of the wave can be derived from;
C = f x wavelength
c is the speed of light = 3 x 10⁸m/s
f is the frequency
Insert the parameters and solve;
3 x 10⁸ = f x 585 x 10⁻⁹
f = [tex]\frac{3 x 10^{8} }{585 x 10^{-9} }[/tex]
f = 5.13 x 10⁻³ x 10¹⁷ = 5.13 x 10¹⁴m⁻¹
the energy of the wave;
E = hf
h is the planck's constant;
E = 6.63 x 10⁻³⁴ x 5.13 x 10¹⁴ = 34.01 x 10⁻²⁰J or 3.4 x 10⁻¹⁹J
