CUET Preparation Today
The length of antenna for trans mitting a signal of 30 kHz is: |
$l=km$ $l=500\, m$ $l=2.5 km $ $l=10\, km$ |
$l=2.5 km $ |
The correct answer is option (3) : $l=2.5 km $ $l_{min}=\frac{\lambda }{4f}=\frac{c}{4f}=\frac{3\times 10^8}{4\times 3 \times 10^4}$ $= 2500\, m$ $= 2.5 \, km$ |
