var questions = new Array();
var choices = new Array();
var answers = new Array();
var response = new Array();

questions[0] = "1. The dielectric constant of metals is";
choices[0] = new Array();
choices[0][0] = "1";
choices[0][1] = "greater than 1 but finite";
choices[0][2] = "zero";
choices[0][3] = "infinite";
answers[0] = choices[0][3];


questions[1] = "2. Two charged spheres separated by a distance d exert force F on each other. If they are immersed in a liquid of dielectric constant 2, then what is the force exerted if all other conditions are same ? ";
choices[1] = new Array();
choices[1][0] = "F / 2";
choices[1][1] = "F";
choices[1][2] = "2F";
choices[1][3] = "4F";
answers[1] = choices[1][0];

questions[2] = "3. When air is replaced by a medium of dielectric constant K, the force of attraction between two charges separated by a distance r";
choices[2] = new Array();
choices[2][0] = "decreases K times";
choices[2][1] = "remains unchanged";
choices[2][2] = "increases K times";
choices[2][3] = "increases K^(-2) times";
answers[2] = choices[2][0];

questions[3] = "4. If distance between two charged particles is doubled, then the force will";
choices[3] = new Array();
choices[3][0] = "be doubled";
choices[3][1] = "be halved";
choices[3][2] = "be one-fourth";
choices[3][3] = "remain the same";
answers[3] = choices[3][2];


questions[4] = "5. A charge q is placed at the centre of the line joining two exactly equal positive charges Q. The system of three charges will be in equilibrium if q is equal to";
choices[4] = new Array();
choices[4][0] = "- Q / 4";
choices[4][1] = "+ Q";
choices[4][2] = "- Q";
choices[4][3] = "Q / 2";
answers[4] = choices[4][0];

questions[5] = "6. The study of the effects associated with electric charges at rest is called";
choices[5] = new Array();
choices[5][0] = "electromagnetism";
choices[5][1] = "electrostatics";
choices[5][2] = "magnetostatics";
choices[5][3] = "none of these";
answers[5] = choices[5][1];
 
 questions[6] = "7. Two spheres A and B of exactly same mass are given equal positive and negative charges respectively. Their masses after charging";
choices[6] = new Array();
choices[6][0] = "remain unaffected";
choices[6][1] = "mass of A > mass of B";
choices[6][2] = "mass of A < mass of B";
choices[6][3] = "nothing can be said";
answers[6] = choices[6][2];

questions[7] = "8. Two point charges repel each other with a force of 100 N. One of the charges is increased by 10% and the other is reduced by 10%. The new force of repulsion at the same distance woule be";
choices[7] = new Array();
choices[7][0] = "100 N";
choices[7][1] = "121 N";
choices[7][2] = "99 N";
choices[7][3] = "141 N";
answers[7] = choices[7][2];

questions[8] = "9. Given that q1 + q2 = q. For what ratio q1/q will the force between q1 and q2 be maximum ?";
choices[8] = new Array();
choices[8][0] = "0.25";
choices[8][1] = "0.5";
choices[8][2] = "1";
choices[8][3] = "2";
answers[8] = choices[8][1];

questions[9] = "10. The dielectric constant of an insulator can be";
choices[9] = new Array();
choices[9][0] = "-1";
choices[9][1] = "0";
choices[9][2] = "0.5";
choices[9][3] = "5";
answers[9] = choices[9][3];

questions[10] = "11. A charge q1 exerts some force on a second charge q2. If a third charge q3 is brought near, the force of q1 exerted on q2";
choices[10] = new Array();
choices[10][0] = "decreases";
choices[10][1] = "remain unchanged";
choices[10][2] = "increases";
choices[10][3] = "data incomplete";
answers[10] = choices[10][1];

questions[11] = "12. The mass of a proton is 1836 times that of an electron. The force of repulsion between two protons at a certain distance is F. Then force between two electrons seperated by same distance is";
choices[11] = new Array();
choices[11][0] = "F";
choices[11][1] = "2F";
choices[11][2] = "F x 1836";
choices[11][3] = "F / 1836";
answers[11] = choices[11][0];
 
questions[12] = "13. The intensity of electric field due to a uniformly charged infinite cylinder of radius R at a distance r (r>R) from its axis is proportional to";
choices[12] = new Array();
choices[12][0] = "r^2";
choices[12][1] = "r^3";
choices[12][2] = "1 / r^2";
choices[12][3] = "1 / r";
answers[12] = choices[12][3];

questions[13] = "14. Two identical conductors of copper and aluminium are placed in a uniform electric field. The magnitude of induced charge in the aluminium will be";
choices[13] = new Array();
choices[13][0] = "zero";
choices[13][1] = "greater than in copper";
choices[13][2] = "equal to that in copper";
choices[13][3] = "less than in copper";
answers[13] = choices[13][2];

questions[14] = "15. The unit of intensity of electric field is";
choices[14] = new Array();
choices[14][0] = "N / C";
choices[14][1] = "J / C";
choices[14][2] = "voltmeter";
choices[14][3] = "N / m";
answers[14] = choices[14][0];

questions[15] = "16. In a non-uniform electric field, electric dipole experiences";
choices[15] = new Array();
choices[15][0] = "torque only";
choices[15][1] = "torque as well as force";
choices[15][2] = "force only";
choices[15][3] = "none of above";
answers[15] = choices[15][1];


questions[16] = "17. The magnitude of electric field E required just to balance a liquid drop of mass m and charge q is";
choices[16] = new Array();
choices[16][0] = "mg / q";
choices[16][1] = "E / m";
choices[16][2] = "mgq";
choices[16][3] = "none of above";
answers[16] = choices[16][0];

questions[17] = "18. The angle between electric dipole moment and the electric field strength due to it on the axial line is";
choices[17] = new Array();
choices[17][0] = "180";
choices[17][1] = "45";
choices[17][2] = "90";
choices[17][3] = "0";
answers[17] = choices[17][0];

questions[18] = "19. A small metallic ball is suspended in a uniform electric field with the help of an insulated thread. If high-energy X-ray beam be made to fall on the ball, the ball";
choices[18] = new Array();
choices[18][0] = "is not deflected at all";
choices[18][1] = "is deflected in the direction of field";
choices[18][2] = "is deflected in direction opposite to the field";
choices[18][3] = "cannot be predicted";
answers[18] = choices[18][1];


questions[19] = "20. A force of 2.25 N acts on a charge of 15 x 10^(-4) C. The intensity of electric field at that point is";
choices[19] = new Array();
choices[19][0] = "1500 N / C";
choices[19][1] = "150 N / C";
choices[19][2] = "15000 N / C";
choices[19][3] = "1000 N / C";
answers[19] = choices[19][0];

questions[20] = "21. A metallic sphere is placed in a uniform electric field of magnitude E. The electric field inside the sphere will be";
choices[20] = new Array();
choices[20][0] = "E";
choices[20][1] = "zero";
choices[20][2] = "2E";
choices[20][3] = "less than E";
answers[20] = choices[20][1];
 
 questions[21] = "22. An electron and a proton are situated in a uniform electric field E. The ratio of their acceleration will be";
choices[21] = new Array();
choices[21][0] = "zero";
choices[21][1] = "unity";
choices[21][2] = "ratio of masses of proton and electron";
choices[21][3] = "ratio of masses of electron and proton";
answers[21] = choices[21][2];

questions[22] = "23. A given charge is situated at certain distance from the electric dipole in the end-on position, experience a force F. If the distance of the charge is doubled, the force acting on the charge will be";
choices[22] = new Array();
choices[22][0] = "2F";
choices[22][1] = "F / 2";
choices[22][2] = "F / 5";
choices[22][3] = "F / 8";
answers[22] = choices[22][3];

questions[23] = "24. Eight equal charged drops are combined to form a big drop. If the potential on each drop is 10V, then potential of big drop will be";
choices[23] = new Array();
choices[23][0] = "40V";
choices[23][1] = "10V";
choices[23][2] = "30V";
choices[23][3] = "20V";
answers[23] = choices[23][0];


questions[24] = "25. There is 10 units of charge at the centre of a circle of radius 1.0 m. The work done in moving 1 unit of charge once around the circle is";
choices[24] = new Array();
choices[24][0] = "10 units";
choices[24][1] = "100 units";
choices[24][2] = "zero";
choices[24][3] = "150 units";
answers[24] = choices[24][2];

questions[25] = "26. Electric potential of earth is taken to be zero because earth is a good";
choices[25] = new Array();
choices[25][0] = "dielectric";
choices[25][1] = "semiconductor";
choices[25][2] = "insulator";
choices[25][3] = "conductor";
answers[25] = choices[25][3];

questions[26] = "27. In bringing, an electron towards another electron, electrostatic potential energy";
choices[26] = new Array();
choices[26][0] = "increases";
choices[26][1] = "decreases";
choices[26][2] = "becomes zero";
choices[26][3] = "remains the same";
answers[26] = choices[26][0];


questions[27] = "28. From a point charge, there is a fixed point A. At A, there is an electric field of 500 V/m and potential difference of 3000 V. Distance between point charge and A is";
choices[27] = new Array();
choices[27][0] = "12 m";
choices[27][1] = "6 m";
choices[27][2] = "16 m";
choices[27][3] = "24 m";
answers[27] = choices[27][1];

questions[28] = "29. Electron volt (eV) is the unit of";
choices[28] = new Array();
choices[28][0] = "energy";
choices[28][1] = "charge";
choices[28][2] = "current";
choices[28][3] = "potential";
answers[28] = choices[28][0];
 
 questions[29] = "30. When a proton is accelerated through 1 V, then its kinetic energy will be";
choices[29] = new Array();
choices[29][0] = "1840 eV";
choices[29][1] = "13.6 eV";
choices[29][2] = "1 eV";
choices[29][3] = "0.54 eV";
answers[29] = choices[29][2];