Q. Dependence of intensity of gravitational field (E) of earth with distance (r) from centre of earth is correctly represented by :
A) [image:2014_Q12_opt_a.png]
B) [image:2014_Q12_opt_b.png]
C) [image:2014_Q12_opt_c.png]
D) [image:2014_Q12_opt_d.png]
Explanation
[Solution] Inside the earth the field grows linearly with r (E ∝ r), and outside it falls as $1/r^2$; the field is attractive (towards the centre), shown negative, as in graph (1). Answer (1).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.