Question

A radar having frequency 20GHz it is located on top of hill of height 500m calculate the maximum distance up to which it can detect object located on surface of Earth(radius of Earth 6.5×10^६​

Answer 1

Answer:

The maximum distance upto which it can detect the object on the surface of Earth is $d = 8.06 \times 10^4 m$

Explanation:

As we know that the maximum distance that it will cover is

$d = \sqrt{2RH}$

here we have

$R = 6.5 \times 10^6 m$

H = 500 m

so we have

$d = \sqrt{2(6.5 \times 10^6)(500)}$

$d = 8.06 \times 10^4 m$

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Topic : Height of anntena

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