What happens to the energy stored in a capacitor if after disconnecting the battery, the plates of a charged capacitor are moved farther

Explanation

Capacitance `Cprop(1)/(d)`, when plates of a capacitor are moved farther, the capacitance decreases. After disconnecting the battery, the charge on capacitor remains constant, therefore the energy stored by capacitor `U(=(q^(2))/(2C))` increases.