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. A Zener diode, having breakdown voltage equal to 15 V, is used in a voltage regulator circuit shown in figure. The curre 4. Pure Si at 500 K has equal number of electron (ne) and hole (nh) concentrations of 1.5 $$ \times $$ 1016 m$$-$$3. Doping 5. In the following figure, the diodes which are forward biased, are 6. An electron in the hydrogen atom jumps from excited state n to the ground state. The wavelength so emitted illuminates a 7. Out of the following which one is not a possible energy for a photon to be emitted by hydrogen atom according to Bohr's 8. A converging beam of rays is incident on a diverging lens. Having passed through the lens the rays intersect at a point 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. The threshold frequency for a photosensitive metal is 3.3 $$ \times $$ 1014 Hz. If light of frequency 8.2 $$ \times $$ 1 11. The r.m.s. value of potential difference V shown in the figure is 12. 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 13. A square loop, carrying a teady current $$I$$, is placed in a horizontal plane near a long straight conductor carrying a 14. Charge q is uniformly spread on a thin ring of radius R. The ring rotates about its axis with a uniform frequency $$f$$ 15. 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 16. 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 17. In the circuit shown in the figure, if the potential at point A is taken to be zero, the potential at point B is 18. 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 19. Two particles are oscillating along two close parallel straight lines side by side, with the same frequency and amplitud 20. Two identical piano wires, kept under the same tension T have a fundamental frequency of 600 Hz. The fractional increase 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 thrown upwards from the surface of the earth, with a velocity u. The mass and the radius of the 23. 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 24. A mass m moving horizontally (along the x-axis) with velocity $$v$$ collides and sticks to a mass of 3m moving verticall 25. A small mass attached to a string rotates on a frictionless table top as shown. If the tension in the string is increase 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 identical piano wires, kept under the same tension T have a fundamental frequency of 600 Hz. The fractional increase in the tension of one of the wires which will lead to occurrence of 6 beats/s when both the wires oscillate together would be

0.01

0.02

0.03

0.04

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 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

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

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

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

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

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 :

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

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

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

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

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