Explanation:

The Ashoka Chakra is a depiction of the Dharma Chakra; a wheel represented with 24 spokes. It is so called because it appears on a number of edicts of Ashoka, most prominent among which is the Lion Capital of Ashoka. The most visible use of the Ashoka Chakra today is at the centre of the Flag of India (adopted on 22 July 1947), where it is rendered in a navy blue colour on a white background, replacing the symbol of charkha (spinning wheel) of the pre-independence versions of the flag.