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

  • question_answer
     What does not change in the field of central force  [MP PMT 2004]

    A) Potential energy

    B)               Kinetic energy

    C)             Linear momentum      

    D)             Angular momentum

    Correct Answer: D

    Solution :

                    For central force, torque is zero.             \[\because \ \tau =\frac{dL}{dt}=0\] Þ L = constant i.e. Angular momentum is constant.


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