Homework Answers
7. Frequency = Speed of light / Wavelength
= 3*108 m/s / 370*10-9 m
= 8.1*1014 sec-1
Energy = h*Frequency
h = 6.62*10-34 J/s
Energy = 6.62*10-34 Js * 8.1*1014 s-1
= 5.4*10-19 J
8. Energy = h*c / Wavelength
h= 6.62*10-34 Js
c= 3*108 m/s
1.83*10-18 J = 6.62*10-34 *3*108 /Wavelength (m)
Wavelength = 1.09*10-7 m
It lies in UV region.
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