JEE Main & Advanced Physics Gravitation / गुरुत्वाकर्षण Question Bank Kepler's Laws of Planetary Motion

  • question_answer
    If the radius of earth's orbit is made 1/4, the duration of an year will become  [BHU 1998; JIPMER 2001, 2002]

    A) 8 times

    B)               4 times

    C)             1/8 times

    D)               1/4 times

    Correct Answer: C

    Solution :

                    \[{{T}^{2}}\propto {{r}^{3}}.\] If r made half then T will become \[\frac{T}{8}.\]


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