(1) Service of any notice under this Act shall be made by delivering or tendering a copy thereof signed, in the case of a notice section 4, by the officer therein mentioned, and, in the case of any notice, by or by order of the Collector or the Judge.

(2) Whenever it may be practicable, the service of the notice shall be made on the person therein named.

(3) When such person cannot be found, the service may be made on any adult male member of his family residing with him; and, if no such adult male member can be found, the notice may be served by fixing the copy on the outer door of the house in which the person therein named ordinarily dwells or carries on business, or by fixing a copy thereof in some conspicuous place in the office of the officer aforesaid or of the Collector or in the court- house, and also in some conspicuous part of the land to be acquired: Provided that, if the Collector or Judge shall so direct, a notice may be sent by post, in a letter addressed to the person named therein at his last known residence, address or place of business and 6[ registered under sections 28 and 29 of the Indian Post Office Act, 1898 (6 of 1898 ), and service of it may be proved by the production of the addressee' s receipt.