Question

The gravitational potential changes uniformly from $-20J/kg$ to $-40J/kg$ as one moves along X-axis from $x=-1m$ to $x=+1m$. Mark the correct statement about gravitational field intensity of origin.

• A. The gravitational field intensity at $x=0$ must be equal to $10N/g$
• B. The gravitational field intensity at $x=0$ may be equal to $10N/g$
• C. The gravitational field intensity at $x=0$ may be greater than $10N/g$
• D. The gravitational field intensity at $x=0$ must not be less than $10N/g$

Answer 1

Answer: (A), (D)

The correct options are
A The gravitational field intensity at $x=0$ must be equal to $10N/g$
D The gravitational field intensity at $x=0$ must not be less than $10N/g$