Physics– Important Questions Bank for Tamil Nadu HSC 2016 Examination

1. With the help of a functional block diagram, explain the working of a super heterodyne AM receiver.
2. What is an operational amplifier? Explain its working as an inverting amplifier?
3. Describe the construction and working of a Bainbridge mass spectrometer in determining the isotopic masses
4. State the principle and explain J.J Thomson’s experiment in determining e/m of an electron.
5. On the basis of wave theory explain total internal reflection
6. Explain the principle, construction and working of a transformer. (Diagram not necessary) define its efficiency
7. Obtain an expression for magnetic induction due to an infinitely long straight conductor carrying current
8. What is an electrical dipole? Derive an expression for the electric field due to an electric dipole at a point along the equatorial line.
9. Explain the working of a half wave diode rectifier
10. Mention the merits and demerits of satellite communication
11. A  carbon specimen found in a cave contained a fraction of 1/8 of C¹⁴ to that present in a living system. Calculate the approximate age of the specimen
12. Calculate the energy released when 1 kg of ₉₂U²³⁵ undergoes nuclear fission. Assume, energy per fission is 200 Me V. Avogadro number is 6.023 x 10 ²³ . Express your answer in kilowatt hour also
13. explain time dilation with an example
14. Describe photoelectric cell and explain its working
15. Mention any five properties of X-rays
16. state and verify Faraday’s second law of electrolysis
17. explain the working of Leclanche cell with a diagram
18. explain the conversion of a galvanometer into an ammeter
19. Obtain an expression for the energy associated with an inductor
20. The plates of a parallel plate capacitor have an area of 90 cm² each and are separated by 2.5 mm. The capacitor is charged by connecting it to a 400 V supply. How much electrostatic energy is strode by the capacitor?
21. Define electric potential at a point in an electric field
22. What is non polar molecule? Give any two examples
23. The resistance of a in chrome wire at 0 ᴼ C is 10 Ω. If its temperature coefficient of resistance is 0.004/ᴼC, find its resistance at boiling point of water. Comment on the result.
24. what is superconductivity?
25. Distinguish between electric power and electric energy
26. A conductor of length 50 cm carrying of current of 5 A is placed perpendicular to a magnetic field of induction 2 x 10^-3 T. find the force on the conductor
27. why the sky appears blue in colour?
28. define specific rotation
29. what are the conditions to achieve laser action?
30. A capacitor of capacitance 2 µF is in an a.c circuit of frequency 1000 Hz. If the rms value of applied emf is 10 V, find the effective current flowing in the circuit.

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