Question

The maximum range $d_{max}$ of radar is

• A. proportional to the cube root of the peak transmitted power
• B. proportional to the fourth root of the peak transmitted power
• C. proportional to the square root of the peak transmitted power
• D. not related to the peak transmitted power at all

Answer 1

Answer: (B)

Maximum range of radar $d_{max}\propto \sqrt{1}$and power transmitted by antenna of length l is $p \propto (1/\lambda)^2 \, \, \Rightarrow \, \, 1 \propto \sqrt{p} \, \, and \, \, d \propto {p}^{1/4}$