Mr.Kamal and Jayant were playing football in the ground. In the middle of the match, Kamal fell down as there was a cramp in his right leg. Jayant rushed towards him and picked him up and told him not to move. They went to the nearby hospital.Doctor examined his legs and advised for an X-ray test for the confirmation of fracture.
(i) What are the values Jayant show here?
(ii) How are X-rays produced?
(iii)Can you give one other application of X-ray?

Shyam and his younger brother were at the restaurant. It was very clean there. None of the flies and insects were there. His younger brother asked him about the fluorescent UV lamp present at the corner. Shyam explained the functioning of UV lamp, how flies and insects get trapped by it?
(i) What are the values shown by Shyam?
(ii) Give the source of UV-rays.
(iii)Give the harmful effect of UV-rays.

Two friends went on an excursion on a hill top where temperature was quite low. One of them fell ill.The other one put a blanket on him, collected the pieces of dry wood and ignited fire in his vicinity. After sometime the ill friend felt better.
(i) What are the type of EM waves coming from fire?
(ii) Why did the ill friend feel better after sitting rear the fire?
(iii) What basic values do you learn from this study?