Question

The Doctor while examining Puja's aunt, advised to do ECG (Electrocardiograph) test for the heart. As Puja's aunt have no idea and importance of ECG (Electrocardiograph) test, so she was postponing it by thinking that it must be too expensive. After Puja came to know everything about her aunt problem. she managed to take help from her parents, friends and neighbours and arranged the amount for the test. Puja got her aunt ready for the test by telling that the ECG test will tell everything about her heart condition and there was no problem in doing it, as the test will not cause any harm to her. After convincing, her aunt got the ECG test done for her heart, whose report greatly helped the doctors to go for further treatment of her aunt. 

(a) What according to you, are the values displayed by Puja and her parents, friends and neighbours to help her aunt ? 

(b) A plane electromagnetic wave of frequency 25 MHz travels in free space along the x-direction. At a particular point space and time, the electric vector  = 6.3 V/m. Calculate B at this point

Answer 1

(a) The values displayed are :

(i) presence of mind,

(ii) high degree o{ general awareness,

(iii) concern for her aunt, and

(iv) helping and caring nature.

(b) In the given condition, the magnetic vector must be along z-axis with