When candle is burnt then the energy that is released in the form of light as well as in the form of thermal energy.
Here the candle is formed by wax which is melted due to due to burning and this will convert the energy present in the form of chemical energy into thermal energy as well as in the form of radiant energy.
Thermal energy will increase the temperature of surrounding air while radiant energy is in the form of light which is an electromagnetic wave.
