Answer:
Capacitance will be decreases to [tex]\frac{C}{2}[/tex]
Explanation:
We have given that capacitance between the plates is C when the distance between the plates is d
We know that capacitance between the plates is given by
[tex]C=\frac{\epsilon _0A}{d}[/tex], here d is the distance between the plates
From the relation we can see that capacitance is inversely proportional to distance
So if we increase the distance to 2d then capacitance will be decrease to [tex]\frac{C}{2}[/tex]