A) 4 lakh
B) 4 billion
C) 40,000
D) 40 lakh
Correct Answer: D
Solution :
[d] \[d=\sqrt{2hR}\] Population covered \[=\pi {{d}^{2}}\times Population\,density\] \[=\pi \times 2hR\times Population\,density\] \[=\frac{3.14\times 2\times 100\times 6.37\times {{10}^{6}}\times 1000}{1000\times 1000}\] \[=4\times {{10}^{6}}\]
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