(2)The competent authority shall make an award under this section within a period of one year from the date of the publication of the declaration and if no award is made within that period, the entire proceedings for the acquisition of the land shall lapse:Provided that the competent authority may, after the expiry of the period of limitation, if he is satisfied that the delay has been caused due to unavoidable circumstances, and for the reasons to be recorded in writing, he may make the award within an extended period of six months:Provided further that where an award is made within the extended period, the entitled person shall, in the interest of justice, be paid an additional compensation for the delay in making of the award, every month for the period so extended, at the rate of not less than five per cent. of the value of the award, for each month of such delay.