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Physics · PYQ NEET UG 2026

हिन्दी

Solar system, the time-period of revolution of a planet tracing a circular orbit of radius R is proportional to :

  1. \( R^{1/2} \)
  2. \( R^{3/2} \)
  3. \( R^{2} \)
  4. \( R^{3} \)

Correct answer · Option 2

\( R^{3/2} \)

Explanation

According to Kepler's third law, \( T^2 \propto R^3 \), therefore \( T \propto R^{3/2} \).

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