What does not change in the field of centr

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What does not change in the field of central force

A

Potential energy

B

Kinetic energy

C

Linear momentum

D

Angular momentum

What does not change in the field of central force

For central force, torque is zero. 

$\;\tau  = \frac{{dL}}{{dt}} = 0$

$L =$ constant 

i.e. Angular momentum is constant.