Electronics and Communication Engineering - Exam Questions Papers - Discussion
Discussion Forum : Exam Questions Papers - Exam Paper 2 (Q.No. 21)
21.
In a radar system, the range of R1 is achieved at a frequency f1. Then the range R2 at frequency R2 = 8f1 would be __________ [Neglect effect of 1 on the Beam width.]
R2 = R1
R2 = 4R1
R2 = 2
R1
R1R2 = 
Answer: Option
Explanation:
The range of the radar is directly proportional to the square root of the frequency.
∴ R ∝ 
∴ R1 ∝ 
and R2 ∝ 
∴ 
∴ 
.
Discussion:
1 comments Page 1 of 1.
Balaji T said:
8 years ago
Where you found this formulae ?
Range = velocity * Time.
or
Range = velocity/frequency.
How it directly proportional to frequency? can you explain this ?
Range = velocity * Time.
or
Range = velocity/frequency.
How it directly proportional to frequency? can you explain this ?
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