Considering the values given below, calculate the mode separation in t – McqOptions

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1.	Considering the values given below, calculate the mode separation in terms of free space wavelength for a laser. (Frequency separation = 2GHz, Wavelength = 0.5 m)
A.	1.4 10<sup>-11</sup>
B.	1.6 10<sup>-12</sup>
C.	1 10<sup>-12</sup>
D.	6 10<sup>-11</sup>
Answer» C. 1 10<sup>-12</sup>

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