In 1946, She and her husband responded to an advertisement in a Gujarati paper looking for actors. She was selected and started her acting career with the Gujarati film Ranakdevi. The same year she acted in her first Hindi film Amar Raj. Among her popular films was Do Bigha Zameen (1953). She largely played mythological characters in the films of the 1940s and 50s. Her image of a goddess was very strong and people would visit her home and seek her blessings.
Among her co-stars were Trilok Kapoor, Bharat Bhushan, Balraj Sahni and Ashok Kumar.
In the 1970s, her roles as mother to the characters played by Amitabh Bachchan made her name synonymous to the impoverished suffering mother. Her role in Deewar (1975) and its dialogues with reference to a mother and son are used as clichs. She often lost her kids in her movies and was given the worst babysitter award in MTV fully faltoo awards. (the ceremony was a parody of the filmfare awards)(courtesy Wiki)
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She made her film debut in 1946 with the successful Gujarati feature film Ranakdevi !!
The other genre of films that saw Nirupa Roy make a strong impact was the ... Munimjee (1955) saw Roy make her first mark as the mother of the hero