The escape velocity from the surface of earth is Ve . The escape velocity from the surface of a planet whose mass and radius are 3 times those of the earth will be
(a) Ve (b) 3 Ve
(c) 9 Ve (d) 27 Ve
Answer: a
(6)
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a (123)