How can the President appoint an acting Chief Justice when the office is vacant or the Chief Justice is unable to perform his duties?
The President can appoint an acting Chief Justice when the office is vacant or the Chief Justice is unable to perform his duties by selecting one of the other Judges of the Court for this purpose. This power is given by Article 126 of the Indian Constitution which states that "when the office of Chief Justice of India is vacant or when the Chief Justice is, by reason of absence or otherwise, unable to perform the duties of his office, the duties of the office shall be performed by such one of the other Judges of the Court as the President may appoint for the purpose."