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(Download) CBSE XII Physics Sample Paper 2012 Set-I
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 frequency?
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?