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# IIT JEE Physics 2003

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### IIT JEE Physics 2003

1. 1. IIT JEE –Past papers<br />PHYSICS- UNSOLVED PAPER - 2003<br />
2. 2. SECTION – I<br />Single Correct Answer Type<br /><ul><li>This section contains 25 multiple choice questions. Each question has four choices (A), (B), (C) and (D) out of which ONLY ONE is correct.</li></li></ul><li>01<br />Problem<br />A point charge q is located in the cavity of a metallic shell .Which of the following diagrams correctly represents the electric lines of forces?<br />a.<br />b.<br />c.<br />d.<br />
3. 3. Problem<br />02<br />A force F is applied to a block of mass as shown in the diagram. What should be the maximum value of force so that the block does not move?<br />10N<br />20N<br />30 N<br />40N<br />
4. 4. Problem<br />03<br />Two identical balls, each of mass mare connected by a rigid rod of length Lean impulse of perpendicular to the rod is applied at one end of this system at rest. The angular velocity produced in the system is<br />a.<br />b.<br />c.<br />d.<br />
5. 5. Problem<br />04<br />CUBE HAS A SIDE OF LENGTH 1.2 CM. Its volume would be<br />a.<br />b.<br />c.<br />d.<br />
6. 6. Problem<br />05<br />If represent the work done in moving a particle of mass m from the point A to the point B along three different paths in the gravitational field of a point mass M as shown in the figure. The work done will satisfy the relation<br />a.<br />b.<br />c.<br />d.<br />
7. 7. Problem<br />06<br />The figure represents the variation of temperature of two bodies X and Y having the same surface area with time due to the emission of radistion. Which of the following expressions is correct regarding the emissivity and absorptive powers of the two bodies?<br />a.<br />b.<br />c.<br />d.<br />
8. 8. Problem<br />07<br />In the figure, CP represents a wave-front and AO and BP are the corresponding two rays. The condition on for constructive interference at P between the ray BP and reflected ray OP is<br />a.<br />b.<br />c.<br />d.<br />
9. 9. 08<br />Problem<br />Two rods, one of aluminum and the other made of steel, having initial lengths <br /> are connected together to form a single rod of length . If the length of each rod increases by the same amount on increasing the temperature by the ratio in terms of coefficient of linear expansions <br /> is given by <br />a.<br />b.<br />c.<br />d.<br />
10. 10. Problem<br />09<br />A wire of length 1m and area of cross section is suspended from the top of a roof at one end end a load of 20N is applied at the other end .If the length of the wire is increased by its Young’s modulus will be<br />a.<br />b.<br />c.<br />d.<br />
11. 11. Problem<br />10<br />A convex lens of focal length 40 cm forms an image of size 3 cm of an object at infinity .If a concave lens of focal length 20cm is introduced at a distance 35 cm from the convex lens, the size of image becomes <br />4 cm<br />5 cm<br />6 cm<br />8 cm<br />
12. 12. Problem<br />11<br />The electric potential between a proton and an electron is given by where is a constant .Assuming Bohr’s model to be applicable, what is the variation of with the principle quantum number n?<br />a.<br />b.<br />c.<br />d.<br />
13. 13. 12<br />Problem<br />A ray of light is incident at the glass-water interface at an angle I,it emerges finally parallel to the surface of water.If the value of index of refraction of water is 4/3,what is the corresponding value of glass?<br />4/3<br />1<br />
14. 14. Problem<br />13<br />An ac source of emf is connected across a circuit consisting of either R-CorR-L orL-C in series.The phase difference between the emf e and the current in the is found to be . Which of the following values meet the requirement of the circuit?<br />a.<br />b.<br />c.<br />d.<br />
15. 15. Problem<br />14<br />For a positively charged particle moving in a x-y plane initially along the x-axis, there is a sudden change in its path due to the presence of electric and /or magnetic fields beyond P. The curve path is shown in x-y plane and is found to be nonlinear. Which of the following combinations is possible?<br />a.<br />b.<br />c.<br />d.<br />
16. 16. Problem<br />15<br />Which of the following circuits can be used to verify Ohm's law?<br />a.<br />b.<br />c.<br />d.<br />
17. 17. Problem<br />16<br />The PT diagram for an ideal gas is down in the figure where AC is an adiabatic process. The corresponding PV diagram is<br />a.<br />b.<br />c.<br />d.<br />
18. 18. 17<br />Problem<br />A police car moving at 30 m/s chases a motorcyclist .The police man sounds his horn at 175 Hz while both of them move towards a stationary siren of frequency 165 Hz. Calculate the speed of the motorcycle, if it is given that he does not observe any beats.<br />24.5 m/s<br />25.5 m/s<br />26.5 m/s<br />27 m/s<br />
19. 19. Problem<br />18<br />For uranium nucleus, how does mass vary with volume?<br />a.<br />b.<br />c.<br />d.<br />
20. 20. Problem<br />19<br />A nucleus with mass number 220 initially at rest emits an -particle .If the Q value of the reaction is 5.5MeV,the kinetic energy of the -particle is <br />5.0 MeV<br />5.4 MeV<br />5.6 MeV<br />6.0 MeV<br />
21. 21. Problem<br />20<br />For a particle executing simple harmonic motion the displacement x is given by . Identify the graph which represents the variation of potential energy (PE) as a function of time and displacement<br />a.<br />b.<br />c.<br />d.<br />
22. 22. Problem<br />21<br />A particle undergoes uniform circular motion. About which point on the plane of the circle will the angular momentum of the particle remain conserved?<br />inside the circle<br />outside the circle<br />centre of the circle<br />on the circumference of the circle<br />
23. 23. Problem<br />22<br />A conducting loop carrying a current I is placed in a uniform magnetic field pointing into the plane of the paper as shown. The loop will have a tendency to<br />contract<br />expand<br />move towards +ve x-axis<br />move towards-ve x-axis<br />
24. 24. Problem<br />23<br />4 kg of ice at -20 is mixed with 10 kg of water at 20 in an insulating vessel having a negligible heat capacity. Calculate the final mass of water remaining in the container. Given: specific heat capacities of water and ice are ,<br /> respectivley.Latent heat of fusion of ice <br />8 kg<br />10 kg<br />12 kg<br />14 kg<br />
25. 25. Problem<br />24<br />In the given figure corresponds to the null deflection in the galvanometer. What would be the value of x if the radius of the wire AB is doubled.<br />a.<br />b.<br />c.<br />d.<br />
26. 26. Problem<br />25<br />The three resistances of equal value are arranged in the different combinations shown in the figure. Arrange them in the increasing order of dissipation of power.<br />a.<br />b.<br />c.<br />d.<br />
27. 27. Problem<br />26<br />If the atom follows the Bohr model and the radius of is n times the Bohr radius, then the value of n is <br />1/4<br />4<br />50<br />100<br />
28. 28. Problem<br />27<br />In the experiment for the determination of the speed of sound in air using the resonance column method, the length of air column that resonates in the fundamental modes with a tuning fork is 0.2 m.On changing this length to 0.70 m,the same tuning fork resonates with the first ovetone.The end correction of the column is<br />0.02 m<br />0.03 m<br />0.04 m<br />0.05 m<br />
29. 29. Problem<br />28<br />A current carrying loop is placed in a uniform magnetic field in four different orientations .Arrange them in the decreasing order of potential energy <br />a.<br />b.<br />c.<br />d.<br />
30. 30. FOR SOLUTION VISIT WWW.VASISTA.NET<br />