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Answer (Detailed Solution Below)

Option 4 : 11.3 km/s / 11.3 km/s

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Detailed Solution

सही उत्तर 11.3 km/s / 11.3 km/s है।

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PrepSnapprepsnap.in • Part -A

Question:

Taking $g = 10$ m/s² and Earth's radius $R = 6.4 \times 10^{6}$ m, the escape velocity from Earth's surface is / $g = 10$ m/s² तथा पृथ्वी की त्रिज्या $R = 6.4 \times 10^{6}$ m लेकर, पृथ्वी की सतह से पलायन वेग है

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7.9 km/s / 7.9 km/s
2.
11.3 m/s / 11.3 m/s
3.
5.6 km/s / 5.6 km/s
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11.3 km/s / 11.3 km/s

Correct Answer: 11.3 km/s / 11.3 km/s

$v_{e} = \sqrt{2gR} = \sqrt{2(10)(6.4 \times 10^{6})} = \sqrt{1.28 \times 10^{8}} = 1.13 \times 10^{4}$ m/s $= 11.3$ km/s. / $v_{e} = \sqrt{2gR} = \sqrt{2(10)(6.4 \times 10^{6})} = \sqrt{1.28 \times 10^{8}} = 1.13 \times 10^{4}$ m/s $= 11.3$ km/s।

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