BSc Physics SEM II 2016 17 2016-17 Physics Paper II Question Paper - Mumbai University | munotes

Questions asked in this paper

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1. Q2 Figures to right indicate full marks
2. Q3 Use of non-programmable calculator is permitted
3. Q1 A select the correct option: 12 marks
4. Q1 Four point charges —Q, -q, 2q and 2Q are placed one at each corner of a square. Relation between Q and q for which the potential at the centre of the square is zero,
5. Q2 Magnetic field produced by Helmholtz coil is
   • b) Uniform magnetic field at the center of coil
   • c) Intense at the centre
   • d) None of these
6. Q3 The gate is universal gate
   • a) EX-OR
   • b) AND
   • c) NOT
   • d) NOR
7. Q4 Ajunction diode can be
   • c). Voltage regulator 5). The phase difference between alternating current and emf ina series LR circuit is
8. Q6 balanced Maxwell’s inductance bridge, R1 = R2,= 800Q, L2 = 4H, then Li =
   • Q.P. Code :03308 B Answer in one statement:- 3
9. Q1 State Coulomb’s law
10. Q2 What is a truth table?
11. Q3 Why is current in a pure capacitor called wattles current? C Fill in the blanks: 5
12. Q1 The OR gate is NOR gate followed by gate
13. Q2 In source, ideal internal resistance is infinity
14. Q3 The SI unit of electric field is
15. Q4 Asolenoid bent in to a circular form by keeping two ends together is called
16. Q5 The expression for average power dissipated in pare resistor in one cycle of alternating emf is
17. Q2 A Attempt any one 8 marks
18. Q1 Show that ina purely inductive AC circuit, current lags in phase behind emf by Represent the phase relationships between emf & current with the help of phasor diagram
19. Q2 Obtain the resonance condition parallel LCR circuit with alternating emf B Attempt any one 8
20. Q1 Draw circuit diagram of Hay’s bridge and derive its balance condition
21. Q2 With the help of neat circuit diagram derive balance condition for Maxwell’s LC bridge. State any one application of the bridge C Attempt any one 4
22. Q1 Acoil of inductance of 0.1H and resistance of us connected in series with capacitor of 0.1 uf and resistance of 2000. If an alternating emf of variable frequency is applied, calculate the resonance frequency and this frequency
23. Q2 bridge, if Ri = Q, Ci; = C2 =0.47 uf and R3 = 2.7k Calculate and the frequency of ac source of emf for balanced bridge
24. Q3 A Attempt any one 8 marks
25. Q1 State and explain superposition theorem with a suitable example
26. Q2 Why.NAND gate is known as universal gate? Explain it with the help of suitable diagram and truth B Attempt.any one:- 8 Explain full adder with its logical circuits and truth table What is filter circuit? Explain in brief the action of capacitor folter C Attempt any one:- 4
27. Q1 Find the value of series resistance connected in series with 6V zener diode produces 140 mA zener current when connected to 20 V input supply
28. Q2 Ina full wave bridge rectifier, each diode has 5 O forward resistance. the input ac voltage from secondary of transformer is 60Sin 314t. If the load resistance is 1000 Q. Calculate the ac input power
29. Q4 A Attempt any one 8 marks
30. Q1 an expression for force due to continuous distribution of charge
31. Q2 is toroid? Derive an expression for magnetic field due to Toroid at mean radius R
    • Q.P. Code :03308 B Attempt any one 8
32. Q1 Obtain an expression for electric field due to a point charge and discrete distribution of charges
33. Q2 Show that energy of point charge distribution is, C Attempt any one. 4
34. Q1 Two small spheres each of mass ‘m’ kg and charge ‘q’ Care suspended from a point by insulating threads each of length ‘I’ m, but of negligible mass. If @ is the angle which each string makes with the vertical when equilibrium has been reached, Show that, q?= 4 mgl? sin? Attempt any four. 20
35. Q2 Draw circuit diagram of full wave bridge rectifier and input- output waveforms
36. Q3 Aclosely wound solenoid of diameter 4.cm.and cm long having 1000 turns. Find the magnetic field at the centre of the solenoid and at.a the axis of solenoid at the end, if current flows
37. Q4 Fined an expression of the magnetic field at the center of a square loop, which carries a steady current
38. Q5 Obtain expression for complex impedance of aseries LCR circuit
39. Q6 With the help of neat circuit diagram derive condition for balanced de-sauty’s bridge

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