an investor places rs 8000 into an investment for 10 years. The compound rate of interest earned is 8% for first 4 years and 12% for the last 6 years. At the end of 10 years the investment(to the nearest rs) is worth?

Stocks are only issued by corporations, whereas bonds can be issued by either corporations or government entities. Bonds pay interest which is guaranteed, unless the company or government entity goes bankrupt, whereas stocks have more risk associated.