NEET PAPER -2 PHYSICS

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1 NEET PPER - PHYSICS Pattern of the Entrance Test:- ) The Entrance Test shall consist of one paper containing 80 objective type questions (four options with single correct answer) fro Physics, Cheistry and Biology (Botany & Zoology) to be answered on the specially designed achine-gradable sheet using Ball Point Pen only. The duration of paper would be 03 hours ) Each ite carries 4 arks. For each correct response the candidate will get 4 arks. For each incorrect response one ark will be deducted fro the total score.. The diensions of h e are sae as that of (where h = planck's constant and e = charge) ) Magnetic field induction ) Magnetic flux 3) Electric field strength 4) Elctric flux. block is pulled on a sooth horizontal plane with a rope which oves with velocity as shown in figure. The velocity of the block on the plane 'u' is v sooth u ) cos ec ) s in 3) cos 4) sec

2 3. Find the value of p so that i j k, i j 3k and 3i pj 5k ay be coplanar ) -8 ) -4 3) 4) 4 4. stationary body of ass 3kg explodes into three equal pieces. Two of the pieces fly off at at right angles to each other, one with a velocity i s and the other with a velocity 3 j s. If the explosion takes plece in 0 5 s, the average force acting on the third piece in newton is ) i 3 j0 ) i 3 j0 3) 3 j i 0 4) i 3 j0 5. sall particle of ass is released fro rest fro point on frictionless heispherical bowl as shown in figure. The ratio of agnitude of centripetal force and noral reaciton on the particle at any point B is O R B ) /3 ) / 3) /3 4) 4/5 6. body is projected up a sooth inclined plane with velocity u fro the point as shown in fig. The height of the inclined plane is 5.4 and the top of the inclind plane is connected to a well of diaeter 3.6. the body just anages to cross the well. The value of u is ( g= 0s ) v u ) 0s ) s 3) 30s 4)54s

3 7. Two blocks, of ass kg and another B of ass kg are shown in figure. force of 5N is applied on. Coefficient of friction between and B is 0. and that between B and horizontal surface is zero. Find the tie taken for the front face of to coincide with that of B: 4c 5N B 8c ) s ) 8 3 s 3) 3 8 s 4) 0.s 8. When a body is oving vertically up with constant velocity, then atch the following Colun-I Colun -II ) Work done by lifting force is ) Negative ) Total work done byall the forces is B) Positive 3) Work done by gravity C) Zero 4) Work done by lifting force + work done by gravity D) Higher positive values ) - B, - C, 3 -, 4 - C ) - B, - D, 3 - C, 4-3) - B, -, 3 - C, 4 - D 4) -, -, 3 - C, 4 - D 9. ladder of length 6 and ass 40kg rests with its upper end against a sooth wall and lower end on rough ground. Find the iniu coefficient of friction between the ground and the ladder so that the ladder does not slip if the ladder akes an angel of 60 0 with the horizontal ( take g =0s ) 3 ) ) 3) 4) During the vapourization of soe aount of water at 373K at atospheric pressure which of the following stateents is correct? a) Work is done by the stea water syste on the atosphere b) Work is done on the stea water syste by the atosphere c) The internal energy of the stea water syste increases d) The internal energy of the stea water syste decreases. a, c only. b, d only 3. b, c only 4. a, d only

4 . Which of the following is not correct about the centre of ass? ) It depends on the frae of reference ) The angular oentu of a syste about the centre of ass is always zero 3) Internal forces do not affect the otion of centre of ass 4) Centre of ass ay or ay not coincide with centre of gravity. Two billiard balls of the sae size (radius r ) and sae ass are in contact on a billiard table. third ball also of the sae size and ass strikes the syetrically and reains at rest after the ipact. The coefficient of restitution between the balls is ) /3 ) /3 3) / 4) 3/4 3. Find the ratio of energy required to raise a satellite upto a height R (radius of earth) fro the surface of earth to that required to put it into an orbit at that height. ) /3 ) 3 3) 4 3 4) wire is suspended vertically fro a rigid support. When a weight W is hanged fro its lower end, in air, the wire extends by 6c. When the weigth is copletely iersed in water, the extension reduces to c. Then the relative density of the aterial of the weigth is ) 5gc 3 ) 8gc 3 3) 4gc 3 4) 6gc 3 5. sall block of wood of specific gravity 0.4 is suberged at a depth of.6 in a container containing water. The container is accelerated upward with an aceleration 3 g. Then the tie taken by the block to reach the surface when released with zero initial velocity is ) 0.4s ) 0.5s 3) 0.s 4) 0.s 6. When a liquid is poured, it insists to runs down the side of the can instead of falling straight down fro the tip as shown in fig. This can be explained by ) Viscosity ) Surface tension 3) Bernoulli's principle 4) Newton's third law of otion

5 7. flask with open outh contains air at 7 0 C. Find the teperature at which 5 th ass of the air escapes the flask. ) 7 0 C ) C 3) 46 0 C 4) 73 0 C 8. Three rods, B and C ade of the sae aterial and having the sae cross-section have lengths 0c, 0c and 0c respectively. Their ends are at teperatures 60 0 C, 60 0 C and 0 0 C as shown. Then the teperature of the junction D is 60 0 C 0c C B 0 0 C 0c D 60 0 C 0c ) 30 0 C ) 36 0 C 3) 50 0 C 4) 40 0 C 9. Three oles of an ideal onoatoic gas perfor on cycle as shown. The gas teperatur es in dif fer ent states ar e T = 400K, T = 800K, T 3 = 400K & T 4 =00K. The work done by the gas during the cycles is approxiately. P 3 4 O T ) 0kJ ) 0kJ 3) 30kJ 4) 5kJ 0. ssertion (): Mean free path of the olecule of a gas varies inversely as the density of the gas Reason (R): Mean free path varies inversely as pressure of the gas. ) and R are true and R is the correct explanation of ) and R are true but R is not the correct explanation of 3) is true but R is false 4) is flase but R is true. particle perfors SHM with a period of 6s. t tie t=s, the particle passes through origin (MP), while at t=4s, its velocity is 4s -. Its aplitude is ) 3 ) ) 4) 6

6 . Speed of sound is 30/s and frequency of sound wave entering at is 500Hz. No sound is heard at B as shown in fig. Then the length of the curved path curved path CDE ay be D C E B ) 6c ) 3c 3) 48c 4) 88c 3. radar sends a radio signal of frequency 9 90 Hz towards an aircraft approaching the radar. If the reflected wave shows a frequency shift of 3 30 Hz, the speed with which the aircraft is approaching the radar in s [ Velocity of the radio signal = 3X0 8 s ] ) 50 ) 00 3) 50 4) 5 4. Two siilar charged spheres are suspended by strings of equal lengths. The strings ake an angle of 30 0 with each other. When suspended in a liquid of density 0.8g/cc, the angle reains the sae. What is the dielectric constant of the liquid? Given density of aterial of the spheres =.6g/cc. ) 3 ) 4 3) 4) 5 5. The equipotential lines and their positions in x y plane are shown in figure. Find electric field internsity in this region y 4V 8V V c 0c 5c x ) 40 V/ ) 60 V/ 3) 0 V/ 4) 80 V/ 6. n electrical dipole is placed at the origin and is directed along the x-axis t a point P, far away fro the dipole, the electric field is parallel to the y- axis. OP akes an angle with the x- axis then ) tan 3 ) tan 3) ) tan

7 7. The LED, i.e., light eitting diode a) is ade fro Ge or Si b) is ade fro Ga s P c) is forward biased d) is reverse biased ) a and b are correct ) b and c are correct 3) a, b and c are correct 4) a, b and d are correct 8. Two radioactive aterials X and X have decay constants 0 and respectively. If initially they have the sae nuber of nuclei, then the ratio of the nuber of nuclei of X to that of X will be /e after a tie of ) 0 ) 3) 0 4) 9 9. ssertion (): Free electrons in conductors do not acquire infinite velocity even after ee infinite tie though acceleration is a. Reason (R): The velocity acquired by the becoes zero after every collision with the lattice sites ) and R are true and R is the correct explanation of ) and R are true but R is not the correct explanation of 3) is true but R is false 4) is flase but R is true 30. Resistance of potentioeter wire B is 0. This is in series with a battery of 5V and a resistance R 40. The length of the potentioeter wire is 5. The null point is obtained at fro the end. Find ef 'E'. 5V R 40 D B E ) V ) 0.V 3) 0V 4) 0.4V 3. tightly wound long solenoid of the radius r etre and nuber of turns per etre equal to n, carries a current of i ap. paticle of ass and charge q projected fro a point on its axis in a direction at right angle to its axis. Find the axiu velocity of the particle so that it ay not touch the solenoid ) nqri 0 ) 0nqri 4 3) 0nri 4) 0riq n

8 3. galvanoeter of 5 resistance can read a axiu currect of 6. It can be used as a volteter to easure axiu of 6V by connecting a resistance to the galvanoeter. Identify the correct choice in the given answers. ) 05 in series )05 in parallel 3) 975 in series 4) 975 in parallel 33. When a current is passed in a circular coil, neutral point is found to be at its centre and B H at that place is T. What will be the resultant agnetic field at the centre when the plane of the coil is turned though 90 0? ) T ) T 3) T 4) T 34. The aterial suitable for aking electroagnets should have: ) High retentivity and high coercivity ) Low retentivity and high coercivity 3) High retentivity and low coercivity 4) Low retentivity and low coercivity 35. The loop PQ, as shwon in figure oves with a velocity. Both loop and velocity are in the plane of paper and a agnetic field B exists in the region perpendicular to plane and directed inward. Find the ef induced between P and Q. x x x x x x x v x x x x x x x r x x x x x x x P a C b x x x x x x x Q ) B r ) Babr 3) Babr 36. In ac a.c circuit, the current flowing is i 5sin 00 t / is V 00sin 00 t V. The power consuption is equal to 4) B r and the potential difference ) 00W ) 40W 3) 0W 4) 0W

9 37. In the given circuit each one of the diodes D and D has forward resistance of 40 oh and infinite backward resistance. Each one of the aeters, and 3 has internal resistance 5oh. The readings of and 3 are respectively 3 D D V 00 ) 0.06, Zero, 0.04 ) Zero, 0.08, ) 0.06, Zero, ) 0.03, 0.08, Zero 38. The electric field of an electroagnetic wave in a ediu is given by E x = 0, E y =.5 V 6 [cos 0 rads t 0 x], E z = 0, The wave is ) Moving along x-direction with frequency 0 6 Hz and wavelength 00 ) Moving along x-direction with frequency 0 6 Hz and wavelength 00 3) Moving along -x-direction with frequency 0 6 Hz and wavelength 00 4) Moving along y-direction with frequency 0 6 Hz and wavelength n object is placed at a distance of 60c fro the lens. convex irror is placed as shown. The iage thus fored coincides with the object. The focal length of the lens and irror are 0c and c respectively. Find the distance between the lens and the convex irror f=c X 60c ) 6c ) c 3) 4c 4) 30c 40. driver uses a lens of power.5d for driving a car. The distance of far point of his eye is: ) 5c ) 6.5c 3) 80c 4) 50c

10 4. Modulation is required to a) Distinguish different transissions b) Ensure that the inforation ay be transitted over long distances c) llow the inforation accessible for different people ) a and b are true ) b and c are true 3) c and a are true 4) a, b and c are true 4. source eits electroagnetic waves of wavelength 3. One bea reaches the observer directly and other after reflection fro a water surface, travelling.5 extra distance and with intensity reduced to /4 as copared to intensity due to the direct bea alone. The resultant intensity will be ) (/4) fold ) (3/4) fold 3) (5/4) fold 4) (9/4) fold 43. particle of ass at rest decays into two particles of asses and having non zero velocities. The ratio of de broglie wavelengths of the particles ) ) 3) 4) is 44. What is the force exerted by a photon of intensity.4kw, if it falls on a perfect absorber of radius etre? ) N ) 8 0 N 3) N 4) N 45. If the series liit of lyen series for hydrogen ato is equal to the series liit of Baler series for a hydrogen like ato, then atoic nuber of this hydrogen like ato is ) ) 3) 4 4) 8

AIPMT / NEET (Physics, Chemistry and Biology) Code A/P/W. Time: 3 hrs Total Marks: 720

AIPMT / NEET (Physics, Chemistry and Biology) Code A/P/W. Time: 3 hrs Total Marks: 720 AIPMT / NEET - 06 (Physics, Cheistry and Biology) Code A/P/W Tie: hrs Total Marks: 70 General Instructions:. The Answer sheet is inside this Text booklet. When you are directed to open the text booklet,