A) angular momentum is conserved
B) linear momentum is conserved
C) energy is conserved
D) angular momentum is not conserved
Correct Answer: A
Solution :
Torque \[\tau =\frac{dL}{dt}\] where, \[L=\]angular momentum If \[\tau =0\] then \[\frac{dL}{dt}=0\] i.e., \[L=\]constant
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