Sophie belongs to a lower middle class. She lives in a small house with her parents and two brothers, Derek and Geoff. When she returns home after school, she feels choked with the steam of the stove and is disgusted with the dirty dishes piled in a corner. Her mother's back has become stooped and bent by handling all the household chores and responsibilities on her own. Her father is a hard labourer and her elder brother, Geoff works as an apprentice mechanic in a garage situated far away from his house. Her family wants Sophie to join work immediately after her school. These are some of the indicators of the financial status of Sophie's family.
A circular coil of diameter 15 mm having 300 turns is placed in a magnetic field of 30 mT such that the plane of the coil is perpendicular to the direction of the magnetic field. The magnetic field is reduced uniformly to zero in 20 ms and again increased uniformly to 30 mT in 40 ms. If the EMFs induced in the two time intervals are \( e_1 \) and \( e_2 \) respectively, then the value of \( e_1 / e_2 \) is: