A) remains the same
B) increases
C) decreases
D) decreases upto a latitude of 45° and then increases
Correct Answer: B
Solution :
The acceleration due to gravity\[(g)\]is given by \[g=\frac{G{{M}_{e}}}{{{R}^{2}}}\] where R is radius, G the gravitational constant and Mg the mass of earth. Since, earth is not a perfect sphere, but slightly bulged from centre, its equitorial radius is 21 km larger than polar radius. Also, since \[g\propto \frac{1}{{{R}^{2}}}\] Hence, g is maximum at poles and minimum at equator.
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