[1] She has appeared in many prominent Bollywood films such as Lamhe, Jodhaa Akbar, Shaadi Ke Side Effects and Begum Jaan.

Arun was first seen acting in Lifeline (Jeevanrekha) a Hindi TV serial on life of doctors, along with Tanvi Azmi on Doordarshan.

In "Raat Akeli Hai", which is a Netflix movie and released on 31 July 2020, she has played the role of mother of the Hero "Nawazuddin Siddiqui" and correctly delivered the dialogues in local dialect.

Arun has been a part of the early years of Indian television Industry, acting in the 1980s Bharat Ek Khoj and Yatra.

She also took on the role of Hansa Mehta, an independence activist who was part of the advisory committee of the constituent assembly, in Samvidhaan which is a TV mini-series based on the making of the Constitution of India.