HPBOSE 2013 physics series A question paper

विशेष निरृदेश :-

                       Special instructions:-

1: You must write question paper series in the circle at top left side of title page of your answer sheet.

2: While answering your questions you must indicate on your answer book the same question number as appears in your question paper.

3: Don't leave blank pages/pages in your answer book.

4: All questions are compulsory.

5: Internal choices are given in some questions.

6: Use log table if necessary.

7: Answer should be brief and to the point.

8: Question no 1-8 are MCQ carrying 1 Mark each. Question no 9-16 are short answer type carrying 2 Mark each. Question no 17-24 are short answer type questions carrying 3 marks each and question no 25-27 are long answer type carrying 4 marks each.

Q9: How will you represent a resistance of 3700+10% ohm by color

Q10: Give four properties of electric lines of forces.

Q11: What is the number of electrons that constitutes a current of one ampere in one second.?

Q12: What are diamagnetic substance? Write any two properties of diamagnetic substance?

Q13: Define self inductance of a coil. Write it's S.I. units.

Q14: Why convex mirror is used as driver mirror? What are it's drawback.

Q15:  The refractive index of a mirror is 4/3. How much time will light take to travel through a water column of length 500m.

Q16: Give the logic symbol,boolean expression and truth table for NOR gate.

Q17: What is potentiometer? Explain how it is used to compare the EMF of two cells?

Q18: derive an expression for the force on a charge  'q' moving with velocity 'v' in a magnetic field B. Discuss the cases when force is maximum and minimum.

Q19:  What are electromagnetic waves? Give their three characteristics.

Q20:. What is total internal reflection? Under what conditions does it takes place?

Q21: If 'h' is planks's constant, find the momentum of a photon of wavelength 0.1A°

OR

Derive an expression for de-Broglie wavelength associated with an electron accelerated from rest through potential difference' V' volt.

Q22.: Define the term half life of a        radioactive substance and obtain it's relation with decay constt.

Q23: Distinguish bet n-type and p-type semiconductors on the basis of energy band diagram

Q24: Greater is the hight of TV transmission antenna, greater is its range. Prove

Q25:   State and prove Gauss's theorem in                electrostatics and by using it, deduce an expression for the electric field at a point due to line charge.

OR

Deduce the effect of introducing dielectric slab bet. Plates of parallel plate capacitor,on the capacitance of parallel plate capacitor.

Q26: Define impedance and derive an expression for it in LCR- series circuit. What will be the impedance of LCR-circuit at resonance.

Q27: What is compound microscope? With the help of a ray diagram,explain it's working. Find an expression for its magnifying power.