Explain in brief the flickering of an object seen through a turbulent stream of hot air rising above the Holi fire

Explanation

During the Holi fire, the temperature of the air just above the fire becomes much greater than that of the air further up. The hot air has lower density (mass per unit volume) and lower refraactive index. It becomes an optically rarer medium. The cool air has higher density and higher refractive index. It is an opically denser medium relative to hot air. Hence, in refractive index. It is an optically denser medium relative to hot air. Hence, in refractive of light, the angle of refractive index. As the physcial conditions of air change rapidly, the apparent position of an object fluctuates rapidly. This gives rise to the flickering of an object seen through a turbulent stream of hot air rising above the Holi fire.