What is dividend tield?
The dividend yield is the ratio of the annual dividend amount to the current price of the stock. So if the dividend is $1 and the current price is $50, the yield is 2 percent ($1/$50). But when the stock changes price the current dividend changes accordingly.
Interim Dividend: Companies can pay dividend at the end of financial year which is called final dividend but sometimes companies declare two dividends one in the middle of the financial years that dividend is called interim dividend and then one at the end of the financial year which is called final dividend.