P is a point at a distance r from the centre of a spherical shell of mass M and radius a…
Physics · JEE Advanced · NTA Exams — Gravitation
P is a point at a distance r from the centre of a spherical shell of mass M and radius a, where r < a. The gravitational potential at P is
- \(-\frac{G M}{r}\)
- \(-\frac{G M}{a}\)
- \(-G M \frac{r}{a^{2}}\)
- \(-G M\left(\frac{a-r}{a^{2}}\right)\)
Answer
(B) - G M a
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