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A 27 mW laser beam has a cross-section...

A 27 mW laser beam has a cross-sectional maximum electric field in this electromagnetic wave is given by :
[Given permittivity of space `in_(0) = 9 xx 10^(12)` SI units, Speed of light `c= 3 xx 10^(8) m//s`]

A

`"1 k V m"^(-1)`

B

`"1.4 k V m"^(-1)`

C

`"0.7 kV m"^(-1)`

D

`"2 kV m"^(-1)`

Text Solution

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The correct Answer is:
B
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