Question

Q17. Angular momentum of a
system remains conserved if *
O (a) external torque is zero
O (b) external force is zero
O (c) both (a) and (b)
O (d) none of the above​

Answer 1

Answer:

Option (a) is correct answer

Explanation:

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Answer 2

Answer:

a. external torque is zero

Explanation:

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