1.

The time period of an earth-satellite in circular orbit is independent of(a) the mass of the satellite(b) radius of the orbit(c) none of them(d) both of them.

Answer»

(a) the mass of the satellite

EXPLANATION: 

If the radius of the orbit = a, then velocity of an earth satellite v = √(GM/a) and the time period T = 2πa/v.      

As we can see that both v and T are independent of the mass of the satellite but both depend on the radius of the orbit a.  



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