The Reserve Bank of India (RBI) is India's central monetary authority that controls the supply of money in the economy through its monetary policy. The objectives of RBI's monetary policy are to maintain price stability and achieve high economic growth. Some key aspects of India's monetary policy include the Monetary Policy Committee that decides the repo rate, instruments like open market operations, cash reserve ratio, and statutory liquidity ratio that control money supply, and a focus on price stability, controlled credit expansion, and promoting efficiency.