Q.

Statement-1: Three orbits are marked as 1, 2 and 3. These three orbits have same semi-major axis although their shapes (eccentricities) are different. The three identical satellites are orbiting in these three orbits, respectively. These three satellites have the same binding energy.

Statement-2: Total energy of a satellite depends on the semi-major axis of orbit according to the expression, E=-GMm2a.

1 Statement-1 is true, Statement-2 is false  
2 Statement-1 is true, Statement-2 is true; Statement-2 is the correct explanation of Statement-1  
3 Statement-1 is true, Statement-2 is true; Statement-2 is not the correct explanation of Statement-1  
4 Statement-1 is false, Statement-2 is true  

Ans.

(2)

In all three orbits, length of semi major axis is same