Rate of exchange applicable for the purposes of calculation of such anti-dumping duty shall be the rate which is specified in the notification of the Government of India in the Ministry of Finance and Company Affairs (Department of Revenue), issued from time to time, in exercise of the powers conferred by sub-clause (i) of clause (a) of sub-section (3) of section 14 of the said Customs Act, and the relevant date for the determination of the rate of exchange shall be the date of presentation of the bill of entry under section 46 of the said Customs Act.