BITSAT 2021 Paper

Section: Physics

Question : 36 of 150

Marks: +1, -0

A point particle is held on the axis of a ring of mass m and radius r at a distance r from its centre C. When released, it reaches C under the gravitational attraction of the ring. Its speed at C will be

√
2Gm
r
(√2−1)
√
Gm
r
√
2Gm
r
(1−
1
√2
)
√
2Gm
r

Validate

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