The right of private defence of the body extends to the voluntary causing of death or of any other harm to the assailant if the offence which occasions the exercise of the right is such an assault as may reasonably cause the apprehension that death will otherwise be the consequence or such an assault as may reasonably cause the apprehension that grievous hurt will otherwise be the consequence or an assault with the intention of committing rape or an assault with the intention of gratifying unnatural lust or an assault with the intention of kidnapping or abducting or an assault with the intention of wrongfully confining a person or an act of throwing or administering acid which may reasonably cause the apprehension that grievous hurt will otherwise be the consequence.