The current interest rate of PPF is 7.10%. If you are putting 10,000 rupees in it and you get so much interest on it, then after 10 years this amount can become 19,820 rupees. But keep in mind that the PPF account is matured in 15 years and you can increase it in the block of 5 years. You have to extension of tenure within one year of maturity. If needed, you can withdraw your money after 5 years. By doing this you get 1% less interest.
Disclaimer: This article is only for general information. It is not a claim of any investment advice or guaranteed return. Be sure to consult your financial advisor before investment.