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The All India Institute of Medical Science, New Delhi was Conducted the AIIMS MBBS Exam 2017 on 28th May 2017. The AIIMS Delhi is fully responsible for the conduct of the AIIMS Exam and declares the AIIMS Cut off and AIIMS MBBS Merit list. AIIMS Official Answer Key was declared on June 2017. Paper pattern: Question paper solve in 3 Hours and 30 Minutes. Physics – 60 Chemistry – 60 Biology – 60 General Knowledge – 20 AIIMS MBBS Distribution of Questions Distribution of types of questions S. No. Type of questions Number of questions 1. Multiple choice questions (MCQs) 140 2. Reason Assertion 60 Total 200 Distribution of section-wise questions S. No. Subjects Number of questions 1. Physics 60 2. Chemistry 60 3. Biology (Botany + Zoology) 60 4. General Knowledge 10 5. Aptitude and Logical Thinking 10 Total 200 AIIMS MBBS Solved Question Paper: Physics 1. To obtain a p-type germanium semiconductor, it must be doped with (a) arsenic (b) antimony (c) Indium (d) phosphorous 2. Sound waves do not.show the phenomenon of (a) interference (b) diffraction (e) refraction (d) polarisation 3. The magnifying power of a compound microscope is high If (a) both me objective and the eyepiece has short focal lengths (b) both the objectve and the eyepiece have long focal lengths (c) the objective has a Short focal length and the eyepiece has a long focal length (d)the objective has a long focal length and the eyepiece has a short focal length 4. 1 curie is (a) 1 dps (b) 3 x 1010dps (c) 106 cos (d) 3.7 x 1010dps 5. To double the covering range of a TV transmitter tower, its height should be made (a) 2 times (b) 4 times (c) √2 times (d) 8 times 6. An alternatmg voltage V = V0sin ωτ is applied across a circuit. As result I = I0 sin(ωτ)- π/2)flows ill it. The power consumed per cycle is (a) zero (b) 0.5 V0I0 (d) 0.707 V0I0 (d) 1.414 V0I0 7. A slab consist of two portions of different materials of same thickness and having the conductivities K1 and K2. The equivalent thermal conductivity of the slab is 7 8. A prism is made up 0f material of refractive index √3. The angle of prism is A. If the angle of minimum deviation is equal to the angle of the prism, then the value of A is (a) 30o (b) 45o (c) 60o (d) 75o 9. The following table 9 is a truth table for (a) NAND gate (b) NOR gate (c) XOR gate (d) AND gate 10. The half-life of a radioactive substance is 10 day. This means that (a) the substance completely disintegrates in 20 days. (b) the substance completely disintegrates in 40 days. (c) 1/8 part at the mass of the substance will be left intact at the end of 40 days (d) 7/8 part of the mass of the substance disintegrates in 30 days. 11. A source and an observer are moving towards each other with a speed equal to υ/2, where υ is the speed of sound. The source is emitting sound of frequency n.The frequency heard by one observer will be (a) Zero (b) n (c) n/3 (d) 3n 12. Velocity of sound waves in air is 330 m/s. For a particular sound in air a path difference of 40 cm is equivalent to phase difference of 1.6π. The frequency of the wave is (a) 165 Hz (b) 150 Hz (c) 660 Hz (d) 330 Hz 13. The power factor of the circuit shown in figure is (a) 0.2 (b) 0.4 (c) 0.8 (d) 0.6 14. A particle is executing linear simple harmonic motion amplitude A. What fraction of the total energy is kinetic when the displacement is half the amplitude. (a) 1/4 (b) 1/2√2 (c) 1/2 (d) 3/4 15. Two simple harmonic motions are represented by y1=4sin(πt– π/2) and y2=3cos(4πt). The resultant amplitude is (a) / (b) 1 (c) 5 (d) 2+√3 16. Three plates 0f common surface area A are connected as shown in figure. The effective capacitance will be 16 17. When 20 J of work was done on gas. 40 J of heat energy was released If the initial energy of the gas was 70 J what is the final internal energy’? (a) 50 J (b) -150 J (c) 90 J (d) 110 J 18. The value of g at a particular point is 9.8 ms-2 Suppose the earth suddenly shrinks uniformly to half it resent size without losing any mass . The value of g at the same point (distance of the point from the centre of earth does not change) Will now be (a) 9.8 ms-2 (b) 4.9 ms-2 (c) 19.6 ms-2 (d) 39.2 ms-2 19. A spherical ball is dropped in a long column of viscous liquid. Which of the following graphs represent the variation of (i) gravitational force with time (ii) viscous force with time (iii) net force acting on the ball with time? 19 (a) Q.R.P (b) R.Q.P (c) P.Q.R (d) R.P.Q 20. The Young’s modulus of a wire of length L the radius r is y newton per square meter lf the length is reduced to L/2 and radius L/2 Its Young’s modulus will be (a) y/2 (b) y (c) 2y (d) 4y 21. A boy of mass m stands on one end of a wooden plank of length L. and muss M The plank is floating on water, If the boy walks from one end of the plank to the other end at a constant speed the resulting displacement of the plank is given by (a) mL/M (b) ML/m (c) mL/M+m (d) mL/M-m 22. A sphere of solid material of relative density 9 has a concentric spherical cavity and Just sinks in water. If the radius of sphere be R. then the radius of cavity (r) will be related to R as 22 23. Average value of kinetic energy and potential energy over entire time period in a SHM is 23 24. In which of the state- shown in figure, is potential energy of a electric dipole maximum? 24 25. A car is travelling with a linear velocity u on a Circular road of radius r. If It is increasing its speed at the rate of a m/s2 then the resultant acceleration will be 25 |
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26. A uniform magnetic field parallel to the plane of paper, exsisted in space initially directed from left to right. When a bar of soft Iron is placed in the field parallel to it, the lines of force passing through It will be represented by figure. 26 27. A body starts from rest and moves with a uniform acceleration. The ratio of the distance covered in the n th second to the distance covered in nsecond 27 28. Wind blowing from South at 10 m/s but to a cyclist it appears to be blowing from the East at 10 m/s The cyclist has a velocity (a) 10i – 10j (b) 10i + 10j (c) – 10i + 10j (d) – 10i – 10j 29. The current. i and voltage V graphs for a given metallic wire at two different temperatures T1 and T2 are shown In the figure. It is concluded that 29 30. The internal resistance of primary cell is 4Ω. It generates a current of 0.2 A in an external resistance of 21Ω. The rate at which chemical energy is consumed is providing the current is (a) 0.42 J/s (b) 0.24 J/s (c) 5 J/s (d) 1 J/s 31. There are four point charges +q, -q, +q and -q are placed at the corners A, B, C, and D respectively of a square of side a.The potential energy of the system is 1/4πε0 times 31 31a 32. The potential difference across the 3 Ω resistor shown in figure is 32 (a) zero (b) 1 V (c) 3 5 V (d) 7V 33. There are N cells in the circuit of figure. The emf and internal resistance of each cell is E and r respectively. The points A and B in the circuit divide the circuit into n and (N – n) cells. The current in the circuit is (a) E/r (b) nE/r (c) NE/Nr (d) Zero 34. The earth’s magnetic field at a certain place has a horizontal component of 0.3 G and total strength 0.5 G. Find angle of dip in tan -1 34 35. Two spherical conductors A and B of radii a and b (b> a) are placed concentrically in air. The two arc connected by a copper wire as shown in figure. The equivalent capacitance of the system is 35 36. The magnetic flux linked with the coil varies with time as φ = 3t24t + 9. The magnitude of the induced emf of 2s is (a) 9 V (b) 16 V (c) 3 V (d) 4 V 37. The force F is given by expression F = A cos(Bx) Csin(Dt), where x is the displacement and t is the time. Then dimension of D/B are same as that of (a) velocity [LT-1] (b) angular velocity[T-1] (c) angular momentum[ML2T-1] (d) velocity gradient[T-1] 38. The thermo cmf of a thermocouple varies with the temperature θ of the hot junction as E = aθ.bθ2 volt where the ratio (a/b) is 700°C. If the cold junction is kept at O°C, then the neutral temperature is (a) 700°C (b) 350°C (c) 1400°C (d) no neutral temperature is possible 39.The wire shown is figure tames a current of 32 A. If r = 3.14 cm. the magnetic field at point P will be 39 40. Carbon, silicon and germanium are semiconductors having four valance e If their respective band gap energies between conduction and valence band are (Eg)c, (Eg)S1, (Eg)Ge (a)(Eg)S1<(Eg)Ge<(Eg)c (b)(Eg)c<(Eg)Ge>(Eg)S1 (c)(Eg)c>(Eg)S1>(Eg)Ge (d)(Eg)c=(Eg)Ge=(Eg)S1 Directions (Q. Noa. 41 to 60) In each of the following questions, two statement are given One is assertion and the other is reason. Examine the statement carefully and mark the correct answer according to the instruction given below (a)If both the assertion and reason are true and reason explains the assertion (b)If both the assertion and reason are true but reason does not explain the assertion (c)If assertion is true but reason is false (d)If assertion is false but reason is true 41. Assertion In an elastic collision between two bodies. the energy of each body is conserved Reason The total energy of an isolated system is conserved. 42. Assertion A body can he at rest even when it is under the action of any number of external forces Reason Vector sum of all the external forces is zero 43. Assertion In a non-uniform circular motion, the acceleration of the particle is equal to sum of the tangential acceleration and the centripetal acceleration. Reason The two acceleration are perpendicular to each other. 44. Assertion A body can have acceleration even if its velocity is zero at that instant of time. Reason The body will be momentarily at rest when it reserves its direction of motion. 45. Assertion Work done in moving a charge between any two points in a uniform electric field is independent of the path followed by the charge. between these points. Reason Electrostatic forces are non conservative 46. Assertion In a transistor amplifier. the output voltage is always nut of phase with the input voltage. Reason The emitter base junction is reverse biased and the base collector Junction is forward biased 47. Assertion In case of pure rolling. the force of friction becomes zero. Reason The speed at the point of contact is zero. 48. Assertion Heat from the sun reaches the earth by convection. Reason Air can be heated only by convection. 49. Assertion A wire carrying an electric current has no electric field around it. Reason Rate of flow of electron’s in one direction is equal to the rate of flow of protons in opposite direction. 50. Assertion If an electron and proton enter a perpendicular magnetic field with equal momentum, then radius of curve for electron is more than that of proton. Reason Electron has less mass than proton. 51. Assertion The ratio Cp/Cvis more for helium gas than for hydrogen gas. Reason Atomic mass of helium is more than that of hydrogen. 52. Assertion Our ears cannot distinguish two notes, one produced by a violin and other by a guitar. if they have exactly same intensity and same frequency. Reason When a musical instrument is played, it produces a fundamental note which is accompanied by a number of overtones called harmonics. 53. Assertion The de-Broglie wavelength equation has significance for any microscopic and submicroscopic particles. Reason de-Broglie wavelength is inversely proportional to the mass of the object its velocity is constant 54. Assertion In stationary wave, there is no transfer of energy. Reason The ratio of kinetic energy to potential energy is independent of the position. 55. Assertion Electrons move from a region of higher potential to a region of lower potential. Reason An electron has less potential energy at a point where potential is higher and vice.versa. 56. Assertion In a radioactive disintegration, an electron is emitted by the nucleus. Reason Electron are present inside the nucleus. 57. Assertion A normal human eye can clearly see all the objects beyond a certain minimum distance. Reason the human eye has the capacity to suitably adjust the focal length of its lens to a certain extent. 58. Assertion A satellite moving in a circular orbit around the earth has a total energy E0, then its potential energy is -E0 Reason Potential energy of the body at a Point In a gravitational field of orbit is –GMm/R 59. Assertion If a liquid in a vessel is stirred and left to itself. the motion disappear after few minutes. Reason The moving liquid exerts equal and opposite force. 60. Assertion At the centre of earth u body has centre of mass, but no centre of gravity. Reason This is because g=0 at the centre of earth |
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