Here I am giving you question papers for Karnataka Second PUC science physics subject examination in PDF file attached with it .

PART A
I Answer the following. 10 x 1 = 10
1. Draw the electric lines of force in the case of two positive point charges
separated by a small distance.
2. Name the charge carriers in metallic conductors.
3. A coil perpendicular to a uniform magnetic field is rotated by 1800. What is
the change in the flux through it?
4. Write the expression for displacement current.
5. Mention one common method of generating X-rays.
6. Write the expression for magnifying power of a telescope in terms of focal
lengths.
7. What is the outcome of Davisson Germer experiment?
8. How does nuclear radius of an atom depend on its mass number?
9. Who discovered the phenomenon of photoelectric effect?
10. What is demodulation?

PART – B
II Answer any FIVE of the following questions. 5×2=10
11. Write two properties of an electric charge.
12. What is electrostatic shielding? Mention its one application.
13. State Kirchhoff’s rules of an electrical network.
14. Mention two properties of a diamagnetic material.
15. What are eddy currents? Mention one application of eddy currents.
16. Draw the ray diagram to construct an image when an object is placed
between the principal focus and pole of a concave mirror.
17. Mention two necessary conditions for doping.
18. Draw the block diagram of a generalized communication system.

PART – C
III Answer any FIVE of the following questions. 5×3=15
19. Write the expression for electric potential at a point due to a dipole and
hence arrive at the expression for electric potential at a point on the dipole
axis.
20. Obtain the expression for effective capacitance of three capacitors connected
in parallel.
21. What is a cyclotron? Draw its schematic labeled diagram.
22. Explain briefly the coil-magnet experiment to demonstrate the phenomenon
of electromagnetic induction.
23. What is meant by alternating current? Define its amplitude and time period.
24. Using Huygen’s wave theory of light, show that the angle of incidence is equal
to angle of reflection in case of reflection of a plane wave by a plane surface.
25. Mention three experimental observations of photoelectric effect.
26. Classify metals, semiconductors and insulators based on the band theory of
solids.

Karnataka 2nd year PUC Science Physics Previous papers

Attached Files

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