Payment of interest.

When the amount for acquisition is not paid or deposited on or before taking possession of the land, the Competent Authority on behalf of the State Government shall pay the amount determined with interest thereon, from the time of so taking possession until the amount shall have been so paid or deposited, at the rate of 4 per cent. per annum for the first six months and thereafter at the rate of 9 per cent. per annum.