\(500\, MHz\) ની આવૃતિવાળું વિદ્યુતચુંબકીય તરંગ \(Y-\)દિશામાં ગતિ કરે છે. એક બિંદુ આગળ ચોક્કસ સમયે ચુંબકીયક્ષેત્ર \(\overrightarrow{ B }=8.0 \times 10^{-8} \hat{ z } \;T\). છે તો આ બિંદુ આગળ વિદ્યુતક્ષેત્ર કેટલું થશે? (પ્રકાશનો વેગ \(\left.=3 \times 10^{8}\, ms ^{-1}\right)\) \(\hat{ x }, \hat{ y }, \hat{ z }\) એ \(x , y\) અને \(z\) દિશાના એકમ સદીશ છે.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.