1.

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  [NCERT 1983; CPMT 1990; MP PMT 2000; UPSEAT 1999]

A. 11.2    
B.             5.6
C.             22.4    
D.             53.6
Answer» D.             53.6


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