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Posted By: krishna mohan Member Level: Gold Posted Date: 02 Jun 2008
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2007 Andhra Pradesh State PHYSICS Question paper
INTER 2ND YEAR MAY 2007 PHYSICS
SECTION - A
Note:
Answer all of the following
Each Qn carries 2 marks
All are very short answer type questions
Answer in one or two sentences only and in one place in proper order.
1. What do u mean by reverberation time of an auditorium?
2. the angle of deviation for violet and red colors of a crown prism are 5.23oo respectively. Find the dispersive power of the prism. and 5.15
3. Mention any two applications of diffraction phenomenon of light
4. Why magnet’s poles are reversed at a given position on deflection magnetometer totake readings?
5. What is specific resistance of the material of a conductor? Mention its uses?
6. What is specific resistance of the material of a conductor? Mention its units?
7. How a table galvanometer is converted into an ammeter and a voltmeter?
8. What is Moseley’s law? Give one significant aspect of the law?
9. Mention any two uses of radio isotopes?
10. What are the important regions of a transistor and what are their main functions?
SECTION – B
Note:
Answer any SIX questions
Each question carries FOUR marks
All are short answer type questions
Limit your answer to 75 words only
11 A motor car approaching a cliff with velocity 108 kmph sounds horn and the echo
is heard after 0.3 sec. Assuming the velocity of sound in air to be 332 m/s. lculate the distance between the car and the cliff when the horn is blow.
12 Draw the ray diagrams of Ramsden’s eye piece and Huygen’s eye – piece and mention two differences between them.
13. How light is polarized by pile of plates? Explain?
14. Explain the effect of dielectric on the energy stored in a capacitor.
1) When battery is disconnected while dielectric is introduced and
2) While dielectric is introduced keeping the battery on in the circuit.
15. What is seebeck effect? Explain how thermo e.m.f. varies with temperature.
16. Derive an expression for Torque acting on a coil with some current through it and kept in a magnetic field.
17. What is nuclear fission and explain liquid drop model of nuclear fission?
18. How junction diode is used as a full wave rectifier? Explain?
SECTION – C
i) Answer any two questions.
ii) All are long answer type questions.
iii) Every correct answer carries eight marks.
iv) Every answer may be limited to 300 words.
19. State laws of vibrating strings and how they are verified by a sonometer?
A string vibrates with frequency 200 Hz. Its length is increased to 4.3 times the initial length and tension is adjusted till the string vibrates with frequency 300 Hz. What is the ratio of the new tension to the original tension?
20. Describe the construction and working of Vibration Magnetometer. Explain the theory to determine magnetic moment of a Bar magnet and Horizontal component of the Earth’s magnetic induction at a place.
21. What is photo electric effect? Mention the laws of photoelectric effect. Explain these laws using Einstein’s equation of photoelectric effect.
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