(10)For the purposes of this section, where the income of an assessee is derived, in part from agriculture and in part from business chargeable to income-tax under the head "Profits and gains of business or profession", for computing the written down value of assets acquired before the tax year, the total amount of depreciation shall be computed as if the entire income is derived from the business of the assessee under the head "Profits and gains of business or profession" and the depreciation so computed shall be deemed to be the depreciation actually allowed under this Act or under the Income-tax Act, 1961.
