पृथ्बी का पलायन वेग है – McqOptions

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1.	पृथ्बी का पलायन वेग है
A.	11.2की0मी/से
B.	21.1की0मी /से
C.	15कीमी/से
D.	7.0की0मी/से
Answer» B. 21.1की0मी /से

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