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Standard XII

Physics

Kepler's Law

For a planet ...

Question

For a planet revolving around sun, if $a$ and $b$ are the respective semi-major and semi-minor axes, then the square of its time period is proportional to

{(\frac{a + b}{2})}^{3}

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{(\frac{a - b}{2})}^{3}

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b^{3}

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a^{3}

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Solution

The correct option is D $a^{3}$
The square of time period of revoulution is directly proportional to the cube of the semi major axis of the orbit - Kepler's law of planetary motion.
Answer is D.

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For a planet revolving around sun, if a and b are the respective semi-major and semi-minor axes, then the square of its time period is proportional to

The correct option is D a3The square of time period of revoulution is directly proportional to the cube of the semi major axis of the orbit - Kepler's law of planetary motion.Answer is D.

For a planet revolving around sun, if $a$ and $b$ are the respective semi-major and semi-minor axes, then the square of its time period is proportional to

The correct option is D $a^{3}$
The square of time period of revoulution is directly proportional to the cube of the semi major axis of the orbit - Kepler's law of planetary motion.
Answer is D.