A) \[\frac{\lambda }{8},\,{{P}_{eff}}\,=K\left( \frac{l}{\lambda } \right)\]
B) \[\frac{\lambda }{16},\,{{P}_{eff}}\,=K{{\left( \frac{1}{\lambda } \right)}^{3}}\]
C) \[\frac{\lambda }{5},\,{{P}_{eff}}\,=K{{\left( \frac{1}{\lambda } \right)}^{\frac{1}{2}}}\]
D) \[\lambda ,\,\,{{P}_{eff}}\,=K\,{{\left( \frac{1}{\lambda } \right)}^{2}}\]
Correct Answer: D
Solution :
Length of antenna = comparable to \[\lambda \] Power \[P=\mu {{\left( \frac{1}{\lambda } \right)}^{2}}\] here \[\mu =K\]
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