MCQ
The polarisation of electromagnetic wave is in:
- AThe directions of electric and magnetic field
- ✓The directions of electric field
- CThe direction of magnetic field
- DCan not be polarized
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(Given resistivities of iron and copper-nickel alloy wire are $12 \;\mu \Omega {cm}$ and $51\; \mu \Omega {cm}$ respectively) (in ${m}$)