1.

Flare angle of horn antenna when axial length l and path difference is given is _____

A. ( = 2 cos^{-1} u2061 frac{l}{l+ } )
B. ( = cos^{-1} u2061 frac{l}{l+ } )
C. ( = 2 cos^{-1} u2061 frac{l}{l- } )
D. ( = cos^{-1} u2061 frac{l}{l- } )
Answer» B. ( = cos^{-1} u2061 frac{l}{l+ } )


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