TS EAMCET · Physics · Electromagnetic Waves
At an instant, a plane electromagnetic wave has its magnetic field in the direction of the vector \(\hat{\mathbf{i}}-\hat{\mathbf{j}}\) and its electric field is in the direction of \(\hat{\mathbf{i}}+\hat{\mathbf{j}}\). The wave is travelling along which direction?
- A \(+x\)-direction
- B \(-x\)-direction
- C +z-direction
- D -z-direction
Answer & Solution
Correct Answer
(D) -z-direction
Step-by-step Solution
Detailed explanation
Direction of magnetic field, \(\hat{\mathbf{B}}=\hat{\mathbf{i}}-\hat{\mathbf{j}}\) Direction of electric field, \(\hat{\mathbf{E}}=\hat{\mathbf{i}}+\hat{\mathbf{j}}\) Direction of propagation of EM wave is given according to poynting vector as…
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