Q. The orbital speed of a satellite depends on

किसी उपग्रह की कक्षीय गति निर्भर करती है

Mass of satellite
उपग्रह का द्रव्यमान

Mass of Earth and radius
पृथ्वी का द्रव्यमान और त्रिज्या

Radius only
केवल त्रिज्या

Shape of Earth
पृथ्वी का आकार

Orbital speed $v$ of a satellite is given by:

v = \sqrt{\frac{GM}{r}}

where $M$ is Earth’s mass and $r$ is the orbit radius. The satellite’s mass and Earth’s shape do not affect this speed.

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