CBSE Class 12 Physics Foriegn Question Paper 2013 (3)

CBSE Class 12 Physics Foriegn Question Paper 2013 (3). Students can download the last year question papers using the link below. Free download of examination question papers with solutions.Last 10 year question papers should be practised to get better marks in examinations.

  1. The electric current passing through a wire in the direction from Q to P is decreasing. What is the direction of induced current in the metallic loop kept above the wire as shown in the figure ?

2. Under what conditions will the force exerted by the magnetic field on a charged particle be (i) maximum and (ii) minimum ?

3. Sketch the electric field lines around a system of two equal and opposite point charges. 1 4. What is a ground wave ? 

5. Two metals M1 and M2 have work functions 2 eV and 4 eV respectively. Which of the two has a higher threshold wavelength for photoelectric emission ?

6. A wheel with 10 metallic spokes each 0.5 m long is rotated with angular speed of 120 revolutions per minute in a plane normal to the earth’s magnetic field. If the earth’s magnetic field at the given place is 0.4 gauss, find the emf induced between the axle and the rim of the wheel.

7. Name the phenomenon associated with the production of back emf in a coil due to change of electric current through the coil itself. Name and define the S.I. unit used for measuring the characteristic of the coil.

8. Two polaroids P1 and P2 are placed 90° to each other. Find the transmitted intensity if a third polaroid P3 is placed between P1 and P2 bisecting the angle between them.

9. A parallel plate capacitor is charged to V volts by a d.c. source. The capacitor is then disconnected from the source. If the distance between the plates is doubled, state, with reason, how (i) capacitance, and (ii) energy stored in the capacitor, will change.

Please click the link below to download pdf file of CBSE Class 12 Physics Foriegn Question Paper 2013 (3).