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JEE Mains · Physics · STD 12 - 8. Electromagnetic waves

વિધુતચુંબકીય તરંગમાં વિધુતક્ષેત્ર અને ચુંબકીયક્ષેત્રની દિશા \(\hat{ k }\) અને \(2 \hat{ i }-2 \hat{ j },\) છે. તરંગની પ્રસરણ દિશા માનો એકમ સદિશ

  1. A \(\frac{1}{\sqrt{2}}(\hat{ i }+\hat{j})\)
  2. B \(\frac{1}{\sqrt{5}}(\hat{ i }+2 \hat{ j })\)
  3. C \(\frac{1}{\sqrt{5}}(2 \hat{ i }+\hat{ j })\)
  4. D \(\frac{1}{\sqrt{2}}(\hat{j}+\hat{k})\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(\frac{1}{\sqrt{2}}(\hat{ i }+\hat{j})\)

Step-by-step Solution

Detailed explanation

\(\hat{ E }=\hat{ k }\) \(\overrightarrow{ B }=2 \hat{ i }-2 \hat{ j } \Rightarrow \hat{ B }=\frac{\overrightarrow{ B }}{| B |}=\frac{2 \hat{ i }-2 \hat{ j }}{2 \sqrt{2}}\) \(\Rightarrow \hat{ B }=\frac{1}{\sqrt{2}}(\hat{ i }-\hat{j})\) Direction of wave propagation…
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