Question

Calculate the wavelength , frequency and wave number of light wave whose time period is 2.0 × 10 raise to power -10 s

Answer 1

time period = 2×10^-10sec
frequency =1/T
V(frequency)=(10^10)2=5×10^9s^-1
wavelength = C/V=(3×10^8)/5×10^9=0.6×10^-1 m=0.06m
wave number = V/C=(5×10^9)/(3×10^8)=1.6×10¹=16m^-1