Four persons went on an excursion on a hill top where temperature was quite low One of them fell sick. The other persons put a blanket on him, collect the pieces of dry wood and ignited fire in his vicinity. After sometime the sick person felt better. Read the above passage and answer the following questions:
(i) What are the type of rays coming from fire?
(ii) Why did the sick person feel better while seating near the fine?
(iii) What basic values do you learn from this study?