Whether in hell the damned are tormented by the sole punishment of fire?

Objections

Objection 1 : It would seem that in hell the damned are tormented by the sole punishment of fire; because Mt. 25:41, where their condemnation is declared, mention is made of fire only, in the words: "Depart from Me, you cursed, into everlasting fire."
Objection 2 : Further, even as the punishment of purgatory is due to venial sin, so is the punishment of hell due to mortal sin. Now no other punishment but that of fire is stated to be in purgatory, as appears from the words of 1 Cor. 3:13: "The fire shall try every man's work, of what sort it is." Therefore neither in hell will there be a punishment other than of fire.
Objection 3 : Further, variety of punishment affords a respite, as when one passes from heat to cold. But we can admit no respite in the damned. Therefore there will not be various punishments, but that of fire alone.