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The escape velocity of a body on an imaginary planet which is thrice the radius of the earth and double the mass of the earth is

The escape velocity of a body on an imaginary planet which is thrice the radius of the earth and double the mass of the earth is ( ve is the escape velocity of earth)

(a)  √2/3 ve                           (b)  √3/2 ve

(c)  √2/3 ve                           (d) 2/√3 ve

Answer: a

(8)

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