Question :
If escape velocity from the earth's surface is 11.2 km/sec. then escape velocity from a planet of mass same as that of earth but radius one fourth as that of earth is
1. 22.4 km/sec
2. 5.65 km/sec
3. 11.2 km/sec
4. 44.8 km/sec
Answer :
1 - 22.4 km/sec
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