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Hybridisation Involving d Orbitals

Two concentri...

Question

Two concentric shells of masses $M_{1}$ and $M_{2}$ are having radii $r_{1}$ and $r_{2}$ . Which of the following is the correct expression for the gravitational field on a mass m?

A

F = \frac{G (M_{1} + M_{2})}{r^{2}}

, for

r < r_{1}

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B

F = \frac{G (M_{1} + M_{2})}{r^{2}}

, for

r < r_{2}

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C

F = \frac{G M_{2}}{r^{2}}

, for

r_{1} < r < r_{2}

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D

F = \frac{G M_{1}}{r^{2}}

, for

r_{1} < r < r_{2}

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Solution

The correct option is C $F = \frac{G M_{2}}{r^{2}}$ , for $r_{1} < r < r_{2}$
The Gravitational field due to outer shell will be
$F = \frac{G M_{2}}{r^{2}}$
for $r_{1} < r < r_{2}$
option (c).

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