Q. When of the following graphs correctly represents the variation of $g$ on earth?
A) [image:8_image37.emf]
B) [image:8_image38.emf]
C) [image:8_image39.emf]
D) [image:8_image40.emf]
Explanation
(a) Below the surface of the earth $g \propto r$ and above the surface of earth $g \propto 1/r^{2}$. Therefore, the graph (a) is correct
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.