1.

The direction of first null of the broadside array of N-Isotropic sources is _____

A. \(cos^{-1}([±\frac{λ}{Nd}])\)
B. \(cos^{-1}⁡([±\frac{πλ}{Nd}])\)
C. \(cos^{-1}⁡([±\frac{2πλ}{Nd}])\)
D. \(cos^{-1}⁡([±\frac{λ}{2Nd}])\)
Answer» B. \(cos^{-1}⁡([±\frac{πλ}{Nd}])\)


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