Question

Energy of an emr of wave length 1.5 micrometer

Answer 1

Answer:

E = 1.32*10^(-19) J

Explanation:

Energy of emr, E=hc/wavelength

h= Planck's Constant, c= speed of light

wavelength=1.5 micrometer = 1.5*10^3 nm

E = 1240nm eV/1.5*10^3

E = 1240*1.6*10^(-19) nm J /1.5*10^3

E = 1.32*10^(-19) J