# Karnataka 2nd PUC Physics Important Questions

Karnataka 2nd PUC is vital, as it helps the student to get in-depth knowledge on the subject or stream they have opted for. Passing in this Karnataka puc board exams will help the students to plan for their career by opting for professional courses of their choice and preference, branching out even further. Hence, you can determine that Physics will be a very interesting subject for the students, who wish to enter engineering or medical profession. Physics is the core of the Science subject. For a student, who wishes to ace in Karnataka secondary education examination board 2nd PUC Physics, they will need to practise more of Karnataka 2nd PUC Physics Important Questions.

Some of the topics considered important for 2nd PUC students are Electric charges and fields, Electromagnetic waves, Wave optics, Atoms, Nuclei, Communication system and so on. These topics are taken properly as per the 2nd PUC syllabus. And now these important questions are formed looking into the Karnataka 2nd pu board question papers.

2nd PUC Physics Important Questions List

1. Define electrical resistivity of the material of a conductor
2. What is magnetic susceptibility?
3. For which angle of incidence reflected ray is completely polarised?
4. Write the expression for the energy of an electron in electron orbit of a hydrogen atom
5. Define magnetic ‘dip’ and ‘declination’ at a place.
6. Derive an expression for the potential energy of electric-di-pole placed in a uniform electric field
7. Write three experimental observations of the photoelectric effect.
8. State Gauss’s law. Derive an expression for electric intensity at a point outside the uniformly charged shell.
9. A conductor of length 3m moving in a uniform magnetic field of strength 100 T. lt covers a distance of 70 m in 5 sec. lts plane of motion makes an angle of 30 Alt+0176 with the direction of the magnetic field. Calculate the emf induced
10. State Kirchhoff’s laws of an electrical network.
11. Draw a diagram representing the schematic arrangement of Geiger-Marsden experimental set up for the alpha particle scattering.
12. What is hysteresis? Define the terms ‘coercivity’ and ‘retentivity’ of a ferromagnetic material.
13. Derive the expression for the half-life of a radioactive nuclide.
14. Draw the block diagram of the generalised communication system.
15. Obtain the expression for the effective emf and the effective internal resistance of two cells connected in parallel such that the currents are flowing in the same direction.
16. ln Young’s double-slit experiment the slits are separated by 0.28 mm and the screen is placed at a distance of 1 .4 m away from the slits. The distance between the central bright fringe and the fifth dark fringe is measured to be 1.35 cm. Calculate the wavelength of the light used. Also find the fringe width if the screen is moved 0.4 m towards the silts, for the same experimental setup.
17. Derive Lens Maker’s Formula for a convex lens
18. An inductor and a bulb are connected in series to an AC source of 220 V, 50 Hz. A current of 11A flows in the circuit and phase angle between voltage and current is
$$\begin{array}{l}\frac{\pi }{4}\end{array}$$
. Calculate the impedance and inductance of the circuit
19. Write Coulomb’s law in vector form. Explain the terms.
20. By assuming Bohr’s postulates derive an expression for the radius of nth orbit of an electron, revolving around the nucleus of a hydrogen atom.

### Why Solve Karnataka board 2nd PUC Physics Important Questions?

• Students have a better idea about the type of questions often asked
• Covers important topics and repeating exam trends
• Get an idea about the subject
• Get more practice in doing physics formula
• Get over the exam fear

For more such resources such as Karnataka state PUC board books or sample papers, students can reach to BYJU’S.