A) 1800 A
B) 13500 A
C) 22500 A
D) None of these
Correct Answer: B
Solution :
According to question \[a\,\sin \,\theta =3\,\left( \frac{\lambda }{2} \right)\,\,\,\,\,\,\,\,\,\,\,\,\,\,(first\,\,secondary\,\,maxima)\] \[a\,\sin \,\,30{}^\circ =\,\,\frac{3\times 4500}{2}\] \[\operatorname{a}\,\,=\,\,13500\,\overset{{}^\circ }{\mathop{A}}\,\]You need to login to perform this action.
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