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The escape velocity of a projectile from the earth is approximately ___________

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The escape velocity of a projectile from the earth is approximately ___________

(a) 7km/sec

(b) 11.2km.sec

(c) 112km/sec

(d) 1.1km/sec
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Right choice is (b) 11.2km.sec

Explanation: From the earth’s surface,

ve=√2gR=11.2km/sec.
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