The escape velocity for a rocket from earth is 11.2 km/sec. Its value on a planet where acceleration due to gravity is double that on the earth and diameter of the planet is twice that of earth will be in km/sec
(a) 11.2 (b) 5.6
(c) 22.4 (d) 53.6
Answer: c
(10)
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a (123)