Question

sovle this question pretty doll 2.7 and 2.9

Answer 1

heya

ans. for 2.7

gn.t=2×10^-10 s

f=1/t= 1/2×10^-10=5×10^9 s^-1

wavelength=c/f=3×10^8/5^10^9
=0.6×10^-1 m

wavenumber=1/wavelength=1/0.6×10^-1
=10/0.6=16.66m^-1


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Answer 2

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