AIPMT 2011 Mains | NEET Year Wise Previous Years Questions

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1. A thermocouple of negligible resistance produces an e.m.f. of 40 µV/ºC in the linear range of temperature. A galvanomete 2. A galvanometer of resistance, G, is shunted by a resistance S ohm. To keep the main current in the circuit unchanged, th 3. Pure Si at 500 K has equal number of electron (ne) and hole (nh) concentrations of 1.5 $$ \times $$ 1016 m$$-$$3. Doping 4. In the following figure, the diodes which are forward biased, are 5. A Zener diode, having breakdown voltage equal to 15 V, is used in a voltage regulator circuit shown in figure. The curre 6. Out of the following which one is not a possible energy for a photon to be emitted by hydrogen atom according to Bohr's 7. An electron in the hydrogen atom jumps from excited state n to the ground state. The wavelength so emitted illuminates a 8. The threshold frequency for a photosensitive metal is 3.3 $$ \times $$ 1014 Hz. If light of frequency 8.2 $$ \times $$ 1 9. A thin prism of angle 15o made of glass of refractive index $$\mu $$1 = 1.5 is combined with another prism of glass of r 10. A converging beam of rays is incident on a diverging lens. Having passed through the lens the rays intersect at a point 11. A coil has resistance 30 ohm and inductive reactance 20 ohm at 50 Hz frequency. If an ac source, of 200 volt, 100 Hz, is 12. The r.m.s. value of potential difference V shown in the figure is 13. A short bar magnet of magnetic moment 0.4 J T$$-$$1 is placed in a uniform magnetic field of 0.16 T. The magnet is in st 14. A square loop, carrying a teady current $$I$$, is placed in a horizontal plane near a long straight conductor carrying a 15. Charge q is uniformly spread on a thin ring of radius R. The ring rotates about its axis with a uniform frequency $$f$$ 16. In the circuit shown in the figure, if the potential at point A is taken to be zero, the potential at point B is 17. Three charges, each +q, are placed at the corners of an isosceles triangle ABC of sides BC and AC, 2$$a$$. D and E are t 18. The electric potential V at any point (x, y, z), all in metres in space is given by V = 4x2 volt. The electric field at 19. Two identical piano wires, kept under the same tension T have a fundamental frequency of 600 Hz. The fractional increase 20. Two particles are oscillating along two close parallel straight lines side by side, with the same frequency and amplitud 21. A mass of diatomic gas $$(\gamma = 1.4)$$ at a pressure of 2 atmospheres is compressed adiabatically so that its temper 22. A particle of mass M is situated at the centre of a spherical shell of same mass and radius a. The magnitude of the grav 23. A particle of mass m is thrown upwards from the surface of the earth, with a velocity u. The mass and the radius of the 24. A small mass attached to a string rotates on a frictionless table top as shown. If the tension in the string is increase 25. A mass m moving horizontally (along the x-axis) with velocity $$v$$ collides and sticks to a mass of 3m moving verticall 26. A conveyor belt is moving at a constant speed of 2 ms$$-$$1. A box is gently dropped on it. The coefficient of friction 27. A projectile is fired at an angle of 45o with the horizontal. Elevation angle of the projectile at its highest point as 28. A particle covers half of its total distance with speed v1 and the rest half distance with speed v2. Its average speed d 29. The density of a material in CGS system of units is 4 g cm$$-$$3. In a system of units in which unit of length is 10 cm

AIPMT 2011 Mains

MCQ (Single Correct Answer)

-1

Two particles are oscillating along two close parallel straight lines side by side, with the same frequency and amplitudes. They pass each other, moving in opposite directions when their displacement is half of the amplitude. The mean positions of the two particles lie on a straight line perpendicular to the paths of the two particles. The phase difference is

$${\pi \over 6}$$

$${{2\pi } \over 3}$$

$$\pi $$

AIPMT 2011 Mains

MCQ (Single Correct Answer)

-1

A mass of diatomic gas $$(\gamma = 1.4)$$ at a pressure of 2 atmospheres is compressed adiabatically so that its temperature rises from 27^oC to 927^oC. The pressure of the gas in the final state is

8 atm

28 atm

68.7 atm

256 atm

AIPMT 2011 Mains

MCQ (Single Correct Answer)

-1

A particle of mass M is situated at the centre of a spherical shell of same mass and radius a. The magnitude of the gravitational potential at a point sutuated at a/2 distance from the centre, will be :

$${{GM} \over a}$$

$${{2GM} \over a}$$

$${{3GM} \over a}$$

$${{4GM} \over a}$$

AIPMT 2011 Mains

MCQ (Single Correct Answer)

-1

A particle of mass m is thrown upwards from the surface of the earth, with a velocity u. The mass and the radius of the earth are, respectively, M and R. G is gravitational constant and g is acceleration due to gravity on the surface of the earth. The minimum value of u so that the particle does not return back to earth, is

$$\sqrt {{{2GM} \over {{R^2}}}} $$

$$\sqrt {{{2GM} \over R}} $$

$$\sqrt {{{2gM} \over {{R^2}}}} $$

$$\sqrt {2g{R^2}} $$

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