Dadabhai Naoroji, one of the Indian freedom fighters, made an attempt to estimate the per capita income of India. Per capita income refers to the average income earned per person in a specific time period. Naoroji was a prominent figure in the Indian National Congress and played a significant role in the Indian independence movement.

Naoroji was known for his economic and political contributions. He was also an economist and believed that the economic condition of India was a crucial aspect of the freedom struggle. To understand the economic situation of the country, he conducted extensive research and analysis.

Naoroji`s goal was to shed light on the economic exploitation faced by India under British rule. In his book, "Poverty and Un-British Rule in India," he presented his findings on the per capita income of India. He estimated that the per capita income of Indians was significantly lower compared to that of the British.

Naoroji`s work on estimating the per capita income of India highlighted the economic disparities under colonial rule and inspired further discussions on economic independence. His efforts were instrumental in bringing attention to the economic conditions of the country during the freedom struggle.