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After the tremendous success of our last year Important Question Bank for Chhattisgarh HSSC (HSC) Board Exam 2016, we have also created a list of **Most Important Question Bank for Chhattisgarh Class XII (class 12) HSC Board Exam 2017** which are likely to appear in HSC Board Exams this year.

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1.what do you mean by dynamo? Describe it on following points –

1. Labelled diagram

2. Working

3. Application.

2. Describe LC circuit on following points –

1. Resultant potential difference

2. Impedance

3. Average power accumulation

4. Expression for resonant frequency

3. Describe pivoted type galvanometer on following points-

1. Labelled diagram

2. Principle

3. Changing method it into ammeter

4. Changing method it into voltmeter

4. Deduce an expression for magnetic field intensity of current carrying circular coil

1. When point is at its axis

2. When point is its centre

5. Write working of CE NPN amplifier with electric circuit diagram

6. Write full wave rectified made from Pn junction diode on following points

1. Electric circuit diagram

2. Working procedure

3. INput and output signal

7. Deduce an expression for capacity of parallel plate condenser when medium between both plate is of dielectric constant ‘K’. Write factor’s effecting its capacity

8. Deduce an expression for electric field intensity of uniformly charged spherical conductor by Gauss theorem.

1. Outside spherical conductor

2. Inside spherical conductor

3. On surface of spherical conductor

9. Write Tan A deflection method of comparison of magnetic moment of two magnets by deflection magnetometer on following points

1. Adjustment of apparatus

2. Labelled diagram

3. Formula

4. Two precautions

10. What is optical fibre? Write its working and two application

11. Write sum and difference method of comparison of magnetic moments of two magnets with vibrational magnetometer on following points –

1. Principle and formulae

2. Characteristics

3. Demerits

4. Two precautions

12. What is co-axial cable? Write its 3 advantages and three limitations.

13. The distance between two slit is 1 mm and its distance from screen is 1 metre, then find out fringe width if the wave length of incident light is 500 nanometer

14. Deduce an expression for lens maker’s formula for thin lens with diagram

15. If the ratio of intensities of two light sources are 9 : 16. Then find its ratio of maximum and minimum intensities.

16. Describe displacement method of focal length of convex lens on following points –

1. Labelled diagram

2. Derivation of formulae used.

17. Write four differences between telescope and Galilean telescope.

18. Write four differences between dispersion without deviation and Deviation without dispersion.

19. Find the wavelength of photon of 1 eV energy.

20. A bar magnet having pole strength m, magnetic moment m and time period T is divided into two equal parts perpendicularly to length then find its pole strength, magnetic moment and Time period of each part.

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