7.1 The above principle would apply to the facts of the present case analogically. It could not be said that applying the amended Rule would amount to retrospective application. The Supreme Court in Punjab University ( supra) observed that by virtue of amended Regulation as regards grace marks was to be applied and the declaration that had failed by applying the amended grace marks was not invalid. It was observed that “there was no element of retrospectively in the change brought about by the amendment. It cannot be said to be retrospective in operation merely because though introduced in 1970, it was applied to the candidate, who appeared for final examination in 1974, after he had joined the course earlier in 1965”.