Question

The energy radiated from the antenna is proportional to ____

• A. $\lambda$
• B. $\frac{1}{{\lambda }^2}$
• C. $\frac{1}{\lambda }$
• D. ${\lambda }^2$

Answer 1

The correct option is B $\frac{1}{{\lambda }^2}$

Energy radiated from the antenna$=E$

$E\propto \frac{1}{{\lambda }^2}$

where $\lambda$ is the wavelength.