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Gravitation — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsGravitation1 Mark
Question
Assertion : If earth were a hollow sphere, gravitational field intensity at any point inside the earth would be zero.
Reason : Net force on a body inside the sphere is zero.
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Answer

(a) Intensity inside a hollow sphere is zero, so force is also equal to zero. $\vec{F}=m \vec{E}$

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