(a)The values displayed by Madhav are :
(i) high order of general awareness,
(ii) ability to convince someone, and
(iii) helping and caring nature.
(b) In that time, the doctors did not know that X-rays are dangerous. They have short wave lenghts, thus they carry a great deal of energy. A high dose of X-rays can cause cancer, so many of the early X-ray operators died of tumours.