A point charge +Q is placed in the vicinity of a conducting surface. Trace the field lines between the charge and the conducting surface.

Define the term ‘quality factor’ of resonance in series LCR circuit. What is its S.I. unit?

Write the function of a transducer in communication system.

For the same angle of incidence, the angle of refraction in two media A and B are and respectively. In which medium is the speed of light less?

Two metallic resistors are connected first in series and then in parallel across a d.c. supply. Plot of I – V graph is shown for the two cases. Which one represents a parallel combination of the resistors and why ?