1.

Escape velocity of a particle from the earth is approximately. (A) 7 km/s (B) 1.1 km/s (C) 11.2 km/s (D) 112 km/s

Answer»

(C) 11.2 km/s

Escape velocity is given by V = \(\sqrt{2gR}\)

\(\sqrt{2×9.8×6.4 ×10^8}\)

= 11. 2 km/s



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