11. (1) No act or proceedings of the Board shall be invalid merely on the grounds of the existence of any vacancy in or defect in the constitution of the Board. A vacancy in the Board or a temporary absence of a member for any reason shall not impair the right of the remaining members to act. (2) All acts done by a person acting in good faith as the Chairman or member shall be valid, notwithstanding that it may afterwards be discovered that his appointment was invalid by reason of any defect or disqualification or had been terminated by virtue of any provision of law for the same being in force; but nothing in this section shall be deemed to give validity to any act of the Chairman, member or Director after his appointment has been shown to be invalid or to have been terminated.