question_answer

Which of the following most closely depicts the correct variation of the gravitation potential V(r) due to a large planet of radius R and uniform mass density? (figures are not drawn to scale)                            [JEE MAIN 11-04-2015]

A)  

B)       

C)  

D)       

Correct Answer: B

Solution :

[b] Potential V(r) due to large planet of radius R is given by