In computing the total income of an assessee who is resident in India, being an individual or a hindu undivided family, there shall be deduction, in accordance with and subject to the provisions of this section, an amount not exceeding twenty thousand rupees (Rs.20,000) paid or deposited by him in the previous year out of his income chargeable to tax, under any scheme framed in this behalf by the Life Insurance Corporation or the Unit Trust of India subject to the conditions specified in sub-section (2) and approved by the board in this behalf.