Sample Paper – 2012
Class – XII
Subject – Physics
Q1. A proton moving in a straight line enters a strong magnetic field
along the field line direction. How will its path and velocity change?
Q2. Sketch a graph to show how the reactance of (i) a
capacitor (ii) an inductor varies as function of frequency?
Q3. Define transformer ratio?
Q4. A variable frequency A.C. source is connected to a
capacitor. Will the displacement current increase or decrease with decrease in
Q5. Suppose that the lower half of a concave mirror’s
reflecting surface is covered with an opaque non-reflecting material. What
effect will this have on the image of an object placed in front of the mirror?