GATE ECE 1998 | Question 2.35

Question

The vector $\mathrm{H}$ in the far field of an antenna satisfies

• A. $\nabla \cdot \overrightarrow{\mathrm{H}}=0$ and $\nabla \times \overrightarrow{\mathrm{H}}=0$
• B. $\nabla \cdot \overrightarrow{\mathrm{H}} \neq 0$ and $\nabla \times \overrightarrow{\mathrm{H}} \neq 0$
• C. $\nabla \cdot \vec{\text{H}}=0$ and $\nabla \times \vec{\text{H}} \neq 0$
• D. $\nabla \cdot \overrightarrow{\mathrm{H}} \neq 0$ and $\nabla \times \overrightarrow{\mathrm{H}}=0$