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A frictionless tunnel is dug along a chord of the earth of at a perpendicular distance R/2 from the centre of earth (where R is radius of earth). An object is released from one end of the tunnel.
The correct graph, showing the variation of magnitude of acceleration of object with its distance from centre of earth is
The correct answer is:
Force due to gravitational field at a distance r, in radial direction.
Component of force along AB
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