Answer:
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Answer:

Explanation:
= Vacuum permeability = 
n = Number of turns
A = Area
I = Current
Self inductance is given by

Here, A has more turns so the self-inductance of A will be higher
For A
![[\because n_A=4n_B]](https://tex.z-dn.net/?f=%5B%5Cbecause%20n_A%3D4n_B%5D)
For B

Dividing the above two equations we have


The gravitational force between two objects is given by:

where
G is the gravitational constant
m1 and m2 are the masses of the two objects
r is the separation between the two objects
The distance of the telescope from the Earth's center is

, the gravitational force is

and the mass of the Earth is

, therefore we can rearrange the previous equation to find m2, the mass of the telescope: