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Consider following cases : P) A planet...

Consider following cases :
P) A planet revolving in an elliptical orbit.
Q) A planet revolving in a circular orbit.
Principle of conservation of angular momentum comes in force in which of these ?

A

Only for (P)

B

Only for (Q)

C

Fopr both, (P) and (Q)

D

Neither for(P) , nor for (Q)

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