Q. When a magnet is pushed in and out of a circular coil $C$ connected to a very senstitive galvanometer $G$ as shown in the adjoining diagram with a frequency $v$, then
A) Constant deflection is observed in the galvanometer
B) Visible small oscillations will be observed in the galvanometer if $v$ is about $50\ Hz$
C) Oscillations in the deflection will be observed clearly if $v = 1$ or $2\ Hz$
D) No variation in the deflection will be seen if $v = 1$ or $2\ Hz$
Explanation
(c) When frequency is high, the galvanometer will not show deflection
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.