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Questions  >>  JEEMAIN and NEET  >>  NEET PAST PAPERS  >>  2001
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Q)

With what velocity should a particle be projected so that its height becomes equal to radius of earth -


( A ) $(\frac{2 GM}{R})^{\frac{1}{2}}$
( B ) $(\frac{8 GM}{R})^{\frac{1}{2}}$
( C ) $(\frac{4 GM}{R})^{\frac{1}{2}}$
( D ) $(\frac{GM}{R})^{\frac{1}{2}}$

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