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7.Gravitation
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केपलर के नियमानुसार उपग्रह का आवर्तकाल इसकी त्रिज्या के साथ निम्न प्रकार से परिवर्तित होगा
A
${T^2} \propto {R^3}$
B
${T^3} \propto {R^2}$
C
${T^2} \propto (\frac{1}{R^3})$
D
${T^3} \propto (\frac{1}{R^2})$
Solution
According to Kepler's third law of planetary motion, "The square of a planet's orbital period is proportional to the cube of the length of the semimajor axis of its orbit."
So, $T ^2 \propto R ^3$
Standard 11
Physics