(Test Bank) Physics Mcqs For IIT-NEET/ IAS / SAT / MAT Multiple Choice Questions Answers Fully Solved

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UNIFORM MOTION MULTIPLES UNIF ORM MOTION 1. A particle starts from rest and moves with constant acceleration a. what is the nature of the graph between the time (t) and the displacement. (a) straight line (b) instant velocity (c) average speed (d) average velocity 2. A particle starts with velocity u and moves with constant acceleration a .what is the nature of the graph between the time (t) and the displacement (x). (a) straight line (b) symmetric parabola UNIFORM MOTION MULTIPLES © Asymmetric parabola (d) Rectangular hyperbola. 3. For motion on a curved path with constant acceleration [magnitude of displacement /distance covered (a) >1 (b) ≥ 1 (c) ≤ 1 (d) <1 4. A particle moving with uniform speed can possess : (a) radial acceleration (b) tangential acceleration © both radial and tang ential accelerations (d) neither radial nor tangential acceleration UNIFORM MOTION MULTIPLES 5. A car accelerates from rest for time t 1 at constant rate a 1 and then it retards at the constant rate a 2 for time t 2 and comes to rest. t 1/t2 = (a) a 1/a2 (b) a 2/a1 (c) a 12/a22 (d) a 22/a12 6. What is the angle between instantaneous displacement and acceleration during the retarded motion (a) Zero (b) π/4 (c) π/2. (d) π. UNIFORM MOTION MULTIPLES 7. the velocity graph of a motion starting from rest with uniform acceleration is a straight line: ( a) Parallel to time –axis. (b) parallel to velocity axis © not passing through origin (d) having none of the above characteristics. 8. The slope of the velocity time graph for retarded motion is: (a) Positive (b) negative (c) zero (d) can be +ve, -ve or zero. 9. Which of the following can be zero when the particle is in motion for some time ? UNIFORM MOTION MULTIPLES (a) Displacement (b) Distance covered © speed (d) none of the above 10. Which of the following statement is false for motion with uniform velocity (a) The motion is along a straight line path. (b) The motion is always in the same direction © Magnitude of displacement < distance covered (d) Average velocity is equal to the instantaneous velocity. 11. A particle is moving on a straight line path with constant acceleration directed along the direction of UNIFORM MOTION MULTIPLES instantaneous velocity. Which of the following statements about the motion of particle is true. (a) Particle may reverse the direction of motion. (b) distance covered = magnitude of displaceme nt (c) average velocity is less than average speed (d) average velocity = instantaneous velocity. 12. if the displacement of a particle is zero, then what can we say about its distance covered ? (a) it must be zero. (b) it cannot be zero. © it is nega tive (d) it may or may not be zero. UNIFORM MOTION MULTIPLES 13. a particle moves with uniform velocity. Which o fthe following statements about the motion of the particle is true. (a) its speed is zero. ( b) its acceleration is zero. © its acceleration is opposite to the v elocity. (d) its speed may be variable 14. A car travels a distance S on a straight road in two hours and then return to the starting point in the next here hours. Its average velocity is : (a) S/5 (b) 2S/5 (c) (S/2)+(S/3) (d) none of the above. UNIFORM MOTION MULTIPLES 15. A particle starts with initial velocity 10ms-1.. it covers a distance of 20 m along a straight into two seconds. What is the acceleration of the particle. (a) zero (b) 1 ms-2. (c) 10ms-2 (d)20 ms-2. 16. A particle moves along a straight line path. After sometime it comes to rest. The motion is with an acceleration whose direction with respect to the direction o velocity is (a) positive throughout motion (b) negative throughout motion (c) first positive then negative UNIFORM MOTION MULTIPLES (d) first negative th en positive 17. The time elapsed is plotted along X -axis and the acceleration is plotted along the Y -axis. The area between the graph and the X -axis gives. (a) Average velocity (b) distance covered (c) differences in velocities (d) difference in accelerations 18. The velocity ν and displacement r of a body are related as : ν2 =kr where k is constant. What will be the velocity after 1 second. Given that the displacement is zero at t=0. (a)√kr (b) kr3/2. UNIFORM MOTION MULTIPLES (c) kr (d) data is not sufficient Numer ical bank 19. The position of a particle moving on a straight line path is given by x = 12+18t+9t2 meter its velocity at t = 2 s is (a) 84 ms-1. (b) 72 ms-1. (c) 54 ms-1. (d) 36 ms-1. 20. The displacement of a particle is given by √x = t+1. which of the following statements about its velocity is true. (a) it is zero. UNIFORM MOTION MULTIPLES (b) it is constant but not zero. (c) it increases with time (d) it decreases with time. 21. The acceleration a of a particle varies with time t as a = bt +c . where b and c are constants. What will be the velocity of the particle which starts from rest after the time t. (a) bt+(1/2)ct2. (b) ct+(1/2)bt2. (c) bt+ct2. (d) ct+bt2. 22 The distance covered by a particle moving along a straight line path with uniform acceleration is given by : x UNIFORM MOTION MULTIPLES = 6+6t+10t2. metre. What is the initial velocity of the particle. (a) 6 ms-1. (b) 7 ms-1. (c) 8 ms-1 . (d) 9 ms-1. 23 A particle starts from the rest & moving with constant acceleration covers a distance x1 in the 3rd second x 2 in the 5th second. The ratio x 1/x2 = (a) 3/5 (b) 5/9 (c) 9/25 (d) 25/81 UNIFORM MOTION MULTIPLES 24. A particle moves along X -axis in such a way that its coordinate X varies with the time t according to the expressions x= (8 – 5t +8t2) meter. The initial velocity of the par ticle is (a) - 5 m/s. (b) 8 m/s. (c) - 8m/s. (d) +16 m/s. 25. The initial velocity of a particle moving along a straight line is 10 m/s and its retardation is 2 ms-2. the distance moved by the particle in the fifth second of its motion is : (a) 1m. (b) 19m. UNIFORM MOTION MULTIPLES (c) 50m (d) 75 m. 26 A ball is dropped from the top of tower 100m high. Simultaneously another ball is thrown upward with a sped of 50 ms-1. after what time do they cross each other. (a) 1s (b) 2s (c) 3s (d) 4s. 27 Two bodies are dropped from different heights h 1 & h 2. The ratio of the times taken by them to reach the ground will be (a) h 22 :h12.