(7B)Where any asset, in respect of which a deduction is claimed and allowed under this section, is used for a purpose other than the specified business during the period specified in sub-section (7A), otherwise than by way of a mode referred to in clause (vii) of section 28, the total amount of deduction so claimed and allowed in one or more previous years, as reduced by the amount of depreciation allowable in accordance with the provisions of section 32, as if no deduction under this section was allowed, shall be deemed to be the income of the assessee chargeable under the head "Profits and gains of business or profession" of the previous year in which the asset is so used.