Neet XI Leave a Comment / By srprhospitals / November 2, 2023 Welcome to your Neet XI 1. Physics Section A: All 35 Questions are mandatory to solve. 2. Length cannot be measured by Debye Fermi Light year Micron 3. If C and R represent capacitance and resistance respectively, then the dimensions of RC are [M⁰L⁰T] [M⁰L⁰T²] [ML⁻¹] none of the above 4. _____ measurement is most precise. 5.00m 5.00km 5.00cm 5.00mm 5. As shown in figure the tension in the horizontal cord is 30 N. The weight W and tension in the string OA in Newton are 30 √3, 30 30 √3, 60 60 √3, 30 none of these 6. A motor boat covers a given distance in 6 hours moving downstream of a river. It covers the same distance in 10 hours moving upstream. How much time (in hours) it takes to cover the same distance in still water? 15 10 7.5 6 7. A drunkard is walking along a straight road. He takes 5 steps forward and 3 steps backward followed again by 5 steps forward and 3 steps backward and so on. Each step is one metre long and takes one second. There is a pit on the road 11 metre away from the starting point. The drunkard will fall into the pit after how much time? 41 s 31 s 29 s 21 s 8. The acceleration of a moving body can be found from area under distance-time graph. area under velocity-time graph. slope of distance-time graph. slope of the velocity-time graph. 9. A boat is moving with velocity of 3î+4ĵ in river and water is moving with a velocity of -3î-4ĵ with respect to ground. Relative velocity of boat with respect to water is 6î 8î 6î+8ĵ -6î-8ĵ 10. P, Q and R are three balloons ascending with velocities U, 4U and 8U respectively. If stones of the same mass be dropped from each, when they are at the same height, then stone from P reaches the ground first. stone from Q reaches the ground first. stone from R reaches the ground first. all stones reach the ground at the same time. 11. A ball is projected upwards from a height h above the surface of the earth with velocity v. The time at which the ball strikes the ground is v/g + 2hg/√2 v/g[1 + √1 +2gh/v²] v/g[1- √1+2h/g] v/g[1+√v²+2g/h 12. Motion of particle is given by equation s = (3t³ + 7t² + 14t +8)m.The value of acceleration of the particle at t =1 secis 10 m/s² 32 m/s² 23 m/s² 16 m/s² 13. An object is moving in a circle of radius 100 m with a constant speed of 31.4 m/s. What is its average speed for one complete revolution? zero 3.14 m/s $\sqrt{2}$ x 3.14 m/s 14. A block of mass m at the end of a string is whirled round in a vertical circle of radius R. The critical speed of the block at the top of its swing below which the string would slacken before the block reaches the top is $\sqrt{Rg}$ Rg R/g $(Rg)^2$ 15. A body rolls down a stair case of 5 steps. Each step has height 0.1 m and width 0.1 m. With _____ velocity will the body reach the bottom. (1/$\sqrt{2}$) m/s 5$\sqrt{2}$ m/s 2$\sqrt{2}$ m/s 5/$\sqrt{2}$ m/s 16. The height y and the distance x along the horizontal plane of a projectile on a certain planet (with no surrounding atmosphere) are given by y= (8t - 5$t^2$) meter and x = 6t meter, where t is in second, the angle with the horizontal at which the projectile was projected is tan⁻¹(3/4) sin⁻¹(3/4) tan⁻¹(4/3) Not obtainable from the given data. 17. A car is travelling with linear velocity v on a circular road of radius r. If it is increasing its speed at the rate of 'a' m /$s^2$ , then the resultant acceleration will be $\sqrt\{\frac{v^4}{r^2}+a^2\}$ $\sqrt\{\frac{v^2}{r^2}-a^2\}$ $\sqrt\{\frac{v^4}{r^2}-a^2\}$ 18. Statement 1 : A coin is placed on phonogram turn table. The motor is started, coin moves along the moving table. Statement 2 : The rotating table is providing necessary centripetal force to the coin. Both statement 1 and statement 2 are true and the statement 2 is the correct explanation of the statement 1. Both statement 1 and statement 2 are true but statement 2 is not the correct explanation of the statement 1. Statement 1 is true but statement 2 is false. The statement 1 and statement 2 both are false. 19. A particle is moving such that its position coordinates (x, y) are (2m,3 m) at time t = 0 ,(6 m,7 m) at time t = 2s and (13 m,14 m) at time t=5s . Average velocity vector $(V_av) from t =0 to t =5 sis $\frac{1}{5}$(13î+14ĵ) $\frac{7}{3}$(î+ĵ) 2(î+ĵ) $\frac{11}{5}$(î+ĵ) 20. A plumb line is suspended from a ceiling of a car moving with horizontal acceleration of a. What will be the angle of inclination with vertical? cos⁻¹ (a/g) cos⁻¹ (g/a) tan⁻¹ (a/g) tan⁻¹ (g/a) 21. A body floats in a liquid contained in a beaker. If the whole system as shown in figure falls freely under gravity, then the upthrust on the body due to liquid is zero equal to the weight of the body in air equal to the weight of liquid displaced none of these 22. An aircraft is moving with a velocity of 30ms⁻¹. If all the forces acting on it are balanced, then it still moves with the same velocity. it will be just floating at the same point in space. it will lose its velocity gradually. it will fall down instantaneously 23. Two forces are such that the sum of their magnitudes is 18 N and their resultant is perpendicular to the smaller force and magnitude of resultant is 12 N. Then the magnitudes of the forces are 10 N, 8 N 12 N, 6 N 13 N, 5 N 16 N, 2 N 24. A block of mass 4 kg is suspended through two light spring balances A and B. Then A and B will read respectively 4 kg and zero kg 4 kg and 4 kg 2 kg and 2 kg zero kg and 4 kg 25. The engine of a jet aircraft applies a thrust force of 10⁵ N during takeoff and causes the plane to attain a velocity of 1 km/s in 10 s. The mass of the plane is 10⁵kg 10⁴kg 10³kg 10²kg 26. Statement 1: The passengers sitting in a bus fall backward, when the bus suddenly starts moving. Statement 2: It is due to inertia of rest Both Statement 1 and Statement 2 are true but Statement 2 is not the correct explanation of Statement 1 Both Statement 1 and Statement 2 are true and the Statement 2 is correct explanation of the Statement 1 Both Statement 1 and Statement 2 are false The Statement 1 is false but the Statement 2 is true 27. The force F acting ona particle of mass m is indicated by the force-time graph as shown. The change in momentum of the particle over the time interval from zero to 8 s is Add figure 24 N s 20 N s 12 N s 6 N s 28. Which among the following, is a form of energy? Power Momentum Pressure Light 29. An object of 1 kg mass has a momentum of 10 kg m/s, then the kinetic energy of the object will be 1000 J 200 J 100 J 50 J 30. A body of mass m moving with velocity v makes a head-on collision with another body of mass 2 m, which is initially at rest. The loss of kinetic energy of the colliding body (mass m) is 1/9 of its initial kinetic energy 1/4 of its initial kinetic energy 1/2 of its initial kinetic energy 8/9 of its initial kinetic energy 31. In a completely inelastic collision, the two colliding particles are separated after collision split into small fragments flying in all directions. remain together after collision. none of the above. 32. The displacement x of a particle moving in one dimension under the action of a constant force is related to the time t by the equation t = $\sqrt{x}$+3, , where x is in meters and t is in seconds. The work done by the force in the first 6 seconds is 9 J 6 J 3 J 0 J 33. A lorry and a car moving with the same K.E. are brought to rest by applying the same retarding force, then car will come to rest in a shorter distance. lorry will come to rest in a shorter distance. both come to rest in a same distance. none of the above 34. Statement 1: Work done by or against force of friction in moving body through any round trip is zero. Statement 2: This is because friction is conservative force. Both Statement 1 and Statement 2 are true but Statement 2 is not the correct explanation of statement 1 Both Statement 1 and Statement 2 are true and the Statement 2 is correct explanation of the Statement 1 Both Statement 1 and Statement 2 are false The Statement 1 is false but the Statement 2 is true 35. Statement 1 : If two protons are brought near one another, the potential energy of the system will increase. Statement 2 : The charge on the proton is +1.6 x 10⁻¹⁹ C. Both statement 1 and statement 2 are true and the statement 2 is the correct explanation of the statement 1. Both statement 1 and statement 2 are true but statement 2 is not the correct explanation of the statement 1. Statement 1 is true but statement 2 is false The statement 1 and statement 2 both are false. 36. A body, constrained to move in y-direction, is subjected to a force given by F = (-2î+15ĵ +6k̂)N. The work done by this force in moving the body through a distance of 10 ĵm along y-axis, is 150 J 20 J 190 J 160 J 37. 1 out of 4