Question

A hollow spherical shell is compressed to half its radius. The gravitational potential at the centre

• A. increases
• B. decreases
• C. remains same
• D. during the compression increases then returns at the previous value at the previmis value

Answer 1

Answer: (B)

decreases

Answer 2

$V =-\frac{ GM }{ r }$
Due to the negative sign, when the radius is halved the potential decreases.