Q.

The escape velocity from the earth is about 11 km/sec. The escape velocity from a planet having twice the radius and the same mean density as the earth is :

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a

22 km/sec

b

11 km/sec

c

5.5 km/sec

d

15.5 km/sec

answer is A.

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Detailed Solution

ve=2GMR=83πGρR2 as M=43πR3ρ
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Get ₹ 1 crore* worth scholarship for JEE / NEET / Foundation
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