This is exact opposite of Repo rate. Reverse Repo rate is the rate at which Reserve Bank of India (RBI) borrows money from banks. RBI uses this tool when it feels there is too much money floating in the banking system.It hs two causes
1. To check the aboundant liquidity in the market.
2. To check inflation indirectly.
The Banks are always happy to lend money to RBI since their money is in safe hands with a good interest. An increase in Reverse repo rate can cause the banks to transfer more funds to RBI due to this attractive interest rates.