CBSE Class 12 Physics Sample Paper 2014 Set E

1. A magnet is is moving towards a coil with a uniform speed  as shown in the figure. State the direction of the induced current in the resistor R.

2. A square coil, OPQR, of side a, carrying a current I, is placed in the Y-Z plane as shown here. Find the magnetic Moment associated with this coil. 

3. Give one example each of a ‘system’ that uses the

(i) Sky wave (ii) Space wave

4. A concave mirror, of aperture 4cm, has a point object placed on its principal axis at distance of 10cm fromthe mirror. The image, formed bythe mirror,is not likely to be a sharp image. State the likely reason for the same. 

5. Two dipoles, ade from charges + q and + Q, respectively, have equal dipole moments. Give the (i) retio between the ‘separations’ of the these two pairs of charges (ii) angle between the dipole axis of these two dipoles. 

6. The graph, shown here, represents the V-I characteristics of a device. Identify the region, if any, over which this device has a negative resistance.

7. Define the term ‘Transducer’ for a communication system. 

8. State the steady value of the reading of the ammeter in the circuit shown below. 

Please refer to attached file for CBSE Class 12 Physics Sample Paper 2014 Set E