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MHT CET 2026 (14 May, Shift 2) · Gravitational Field

Gravitational Field question from MHT CET 2026 (14 May, Shift 2)

Q1MHT CET 2026 · 14 MAY · SHIFT 2Medium

Gravitational Field

The magnitude of gravitational field at distances r1r_1 and r2r_2 from the centre of a uniform sphere of radius R and mass M are I1I_1 and I2I_2 respectively. Given that r1>r_1 > RR and r2<r_2 < RR, the ratio I1I2\frac{I_1}{I_2} is

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Answer: (c)

  1. Outside (r1>Rr_1 > R): I1=GMr12I_1 = \frac{GM}{r_1^2}.
  2. Inside (r2<Rr_2 < R): I2=GMr2R3I_2 = \frac{GMr_2}{R^3}.
  3. I1I2=GMr12⋅R3GMr2=R3r12r2\frac{I_1}{I_2} = \frac{GM}{r_1^2}\cdot\frac{R^3}{GMr_2} = \frac{R^3}{r_1^2 r_2}
  4. So the answer is (c) R3r12r2\frac{R^3}{r_1^2 r_2}.
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