Question

Calculate to the
radiation
frequency
sa of
having
the
wave
length 2000 A°​

Answer 1

wave length is 2000×10^-10

using,

frequency=c/wavelength

=3×10^8/2000×10^-10

=15×10^16

wave number=1/ wavelength

=0.5×10^7

energy=hc/lamda

e=12400×1.6×10^-19×10^-10/2000×10^-10

e=9.92×10^-19.