Question

When a magnet is pushed in and out of a circular coil C connected to a very sensitive galvanometer G as shown in the adjoining diagram with a frequency $\nu$, then

• A. Constant deflection is observed in the galvanometer
• B. Visible small oscillations will be observed in the galvanometer if $\nu$is about 50 Hz
• C. Oscillations in the deflection will be observed clearly if $\nu = 1$ or 2 Hz
• D. No variation in the deflection will be seen if $\nu = 1$or 2 Hz

Answer 1

Answer: (C)

Oscillations in the deflection will be observed clearly if $\nu = 1$ or 2 Hz

Answer 2

When frequency is high, the galvanometer will not show deflection.