Q.

Two particles of masses m1 and m2, m1 > m2 move in circular paths under the action of their gravitational attraction, then:

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a

they move in the same circle

b

radius of circular path of m1 is more than that of m2

c

radius of circular path of m1 is less than that of m2

d

each moves along circular path of variable radius

answer is C.

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Detailed Solution

As both particles revolve around their common center of mass. Since m1 is heavy hence COM will be more closer to m1. Hence r1<r2

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