The Rangarajan Committee was related to the measurement of poverty in the country. The committee was constituted by the Planning Commission of India in 2012 and was headed by C. Rangarajan, an eminent economist and former chairman of the Prime Minister's Economic Advisory Council.

The committee's primary objective was to revise the methodology for estimating poverty and to suggest a new poverty line for India. The existing poverty line was based on the recommendations of the Tendulkar Committee, which had used the calorie intake as the criterion for defining poverty. However, there were concerns that the existing poverty line was outdated and did not reflect the ground realities.

The Rangarajan Committee adopted a multidimensional approach to measure poverty. It recommended that poverty should be estimated based on both income and consumption expenditure. The committee also suggested that the poverty line should be revised periodically to account for changes in prices and consumption patterns.

The committee introduced the concept of a "poverty line basket" which included not only food but also non-food items such as education, health, and sanitation. This was in line with the United Nations Development Programme's Human Development Index, which considers factors beyond income in measuring poverty.

The committee's recommendations were based on data from the National Sample Survey Office (NSSO), which conducted large-scale surveys to collect information on household consumption expenditure. The committee used the data to estimate the poverty line and the poverty ratio for different states and categories of population.

The recommendations of the Rangarajan Committee were met with some criticism and controversy. There were concerns that the new poverty line would lead to an increase in the number of people categorized as poor, which could have implications for government welfare programs and poverty alleviation efforts. However, the committee's approach was widely appreciated for its comprehensive and multidimensional approach to measuring poverty.

In conclusion, the Rangarajan Committee was constituted to revise the methodology for estimating poverty in India. It introduced a multidimensional approach and recommended a new poverty line based on income and consumption expenditure. The committee's recommendations aimed to provide a more accurate and comprehensive measure of poverty in the country.