If the radius of a planet is four times that of earth and the value of g is same for both, the escape velocity on the planet will be
(a) 11.2 km/s (b) 5.6 km/s
(c) 22.4 km/s (d) None
Answer: c
(5)
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a (123)