A remote-sensing satellite of earth revolves in a circular orbit at a height of 0.25 \times 10^6 {\m} above the surface of earth. If earth's radius is 6.38 \times 10^6 {\m} and {\g}=9.8 {\ms}^{-2}, then the orbital speed of the satellite is [NEET 2015]

Correct Answer is : 7.76km s−1

Class 11 NEET Physics Gravitation Questions

Question : 30 of 85

Marks: +1, -0

A remote-sensing satellite of earth revolves in a circular orbit at a height of 0.25×106m above the surface of earth. If earth's radius is 6.38×106m and g=9.8ms−2, then the orbital speed of the satellite is

[NEET 2015]

9.13‌km‌ s−1
6.67‌km‌ s−1
7.76‌km‌ s−1
8.56‌km‌ s−1

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