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एक समतल विधुतचुंबकीय तरंग में चुंबकीय क्...

एक समतल विधुतचुंबकीय तरंग में चुंबकीय क्षेत्र `B_(y) = 2 xx 10^(-7) sin (0.5 xx 10^(3) x + 1.5 xx 10^(11) t)` टेस्ला है ।
(i) तरंग की आवृति तथा तरंगदैघ्र्य क्या है ?
(ii) वैधुत क्षेत्र के लिए व्यंजक लिखिए ।

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