What is "imtihan"

Imtihan ("The Test") is a 1974 Indian Hindi film starring Vinod Khanna, Tanuja and Bindu. The story of the film revolves around an idealistic professor who decides to reform a group of rowdy students at a college. It is inspired by the 1967 British film To Sir, with Love, and has inspired the television series Jeet. The film was shot in Nashik.