Shashi

Brilliant Exam Engine dissolving agent Key with malarkey Total prison term 40 Min maximum mark 120 Subject Demo Test Mark for authorized answer 4 Chapter One Dimensional Motion Mark for falsely Answer -1 1. A particle starts from the origin, goes along x-axis to the point (20m, 0) and then returns along the same line to the point (-20m, 0). The outstrip and sack of the particle during the depend on be A)40m, 0 B)40m, 20m C)40m, -20 m D)60m, -20 m E)+20m, -40 m insinuate outstrip = 20 + 20 (-20) = 60 m Displacement = -20 0 = -20 m 2.Choose the sic statement from the succeeding(a) A)The magnitude of amphetamine of a particle is touch on to its fixedness B)The magnitude of the average focal ratio in an interval is qualified to its average speed in that interval C)It is impossible to squander a situation in which the speed of the particle is never zero precisely the average speed in an interval is zero D)It is possible to have a situation in which the speed of par ticle is zero alone the average speed is not zero E)Both A and B 3.Which of the following is not an example of linear motion A)A book at backup man B)A torso in invariant circular motion C)Wheel rotating at consistent speed on road D)A body rolling down an disposed plane E)None 4. The correct statement from the following is A)A body having zero velocity will not necessarily have zero acceleration B)A body having zero velocity will necessarily have zero acceleration C)A body having uniform speed can have only uniform acceleration D)A body having non-uniform velocity will have zero acceleration E)All the supra 5.When two bodies move uniformly towards each other the distance between them decreases by 8 m/s. If both bodies move in the same direction with different speeds the distance between them pluss by 2 m/s. The speeds of two bodies will be A)4 m/s and 3 m/s B)4 m/s and 2 m/s C)5 m/s and 3 m/s D)7 m/s and 3m/s E)8 m/s and 4 m/s Hint 6. A car runs at a constant speed on a ci rcular track of radius 100m, taking 62. 8 indorsement on each lap. What is average velocity and average speed on each lap A)10m/s, 10 m/s B)0, 0 C)0, 10 m/s D)10 m/s, 0 m/s E)10m/s, 5 m/s Hint . Distance traveled by a body is directly proportional to time, then the speed of the body A)increases B)decreases C)first increases and then decreases D)is zero E)remains the same 8. A car moving with a speed of 40 km/h can be pauseped by applying breaks after at least 2m. If the same car is moving with a speed of 80 km/h, the minimum stopping distance is A)8 m B)2 m C)4 m D)6 m E)10 m Hint A)Acceleration B)Velocity C)Displacement D)Distance E)Mass 9. 10.The distance travelled by a body falling freely from rest in first, second and third seconds are in the ratio A)1 2 3 B)1 3 5 C)1 4 9 D)1 4 5 E)1 1 1 Hint A)6 sec B)8 sec C)10 sec D)4 sec E)Cannot nab the bus 11. Hint 12. A)Uniform acceleration B)Uniform deceleration C)Non-uniform acceleration D)Zero acceleration E)Non-uniform retardation Hint 13. A)Directly towards the fag B)5 cm above the target C)10 cm above the target D)15 cm above the target E)5 cm below the target Hint A B C D E 14. Hint 15.With doubling the speed of a vehicle the distance required to stop it becomes A)Doubled B)Halved C)Tripled D)Four times E)Five times Hint A B C D 16. E 17. A B C D E 18. A B C D E 19. A B C D E 20. If displacement of a particle is zero, distance cover by it A)may be zero or may not be zero B)must be zero C)must not be zero D)all are true E)all are false 21. The distance travelled is given by A)area under speed time chart B)area under distance time graph C)slope of velocity time graph D)slope of velocity time graph E)None 22. A B C D E Hint 23.A clustering is thrown upward. After it has left the hand, its acceleration A)decreases B)increases C)is zero D)remains constant E)will increase during descending and decrease during ascending 24. A)20 m B)25 m C)30 m D)45 m E)40 m Hint A B C D E 25. Hint 26. A body i s thrown upwards and reaches its maximum height. At that position A)its acceleration is minimum B)its velocity is zero and acceleration is likewise zero C)its velocity is zero but acceleration is maximum D)its velocity is zero and its acceleration is the acceleration due to gravity E)both A and B 27.A)Velocity displacement relation B)Position time relation C)Time Velocity relation D)Time displacement relation E)Acceleration displacement relation 28. A)Velocity B)Acceleration C)Displacement D)Speed E)A and B 29. Speed is a A)vector total B)scalar quantity C)neither vector nor scalar D)sometimes vector sometimes scalar E)none 30. A particle moves with uniform velocity. Which of the following statements is true A)Its speed is zero B)its acceleration is zero C)its speed is variable D)its acceleration is opposite to velocity E)its velocity is negative