ECAT Physics Online Test With Answers

image
image
image

ECAT Physics Online Test

Sr. # Questions Answers Choice
1 For a fixed force, larger is the mass of a body the greater is its acceleration smaller is its acceleration smaller is its weight zero is its acceleration
2 Inertia mass and gravitational mass are opposite identical identical when there is no friction all of them
3 The effect of applying a force on a moving body is to change its direction of motion only its speed of motion only both the direction and speed of motion its inertia only
4 Inertial frame of references are those frame of references which are moving with increasing velocity decreasing velocity constant velocity all of them
5 The mass of the object is a quantities measure of its speed velocity acceleration inertia
6 A 5 kg mass is falling freely, the force acting on, it will be 19.6 N 9.8 N 5 N Zero
7 The discuss used by athlete has a mass of 1 kg, its weight in newton is 9.8 N 80 N 98 N 100 N
8 A mass of 5kg moves with an acceleration of 10m s-2force applied is 10<b>N</b> 50<b>N</b> 2<b>N</b> 20<b>N</b>
9 Acceleration produced in a body by the force varies inversely as the applied force directly as the applied force directly as the mass of the body none of them
10 Acceleration produced in a body by a force varies inversely as the applied force directly as the applied force directly as the mass of the body none of them
11 A non-inertial frame of reference is that frame of reference in which <b>a</b> = 0 <b>a</b> &gt; 0 or <b>a</b> &lt; 0 <b>v</b> = 0 none of them
12 An inertial frame of reference is that frame of reference in which <b>a</b> = 0 <b>a</b> &gt; 0 <b>a</b> &lt; 0 all of them
13 Newton's laws are adequate for speeds that are low compared with the speed of light equal to the speed of light greater than the speed of light all of them
14 Newton published laws of motion in his famous book "principia" in 1867 1667 1676 1687
15 If the velocity of the body decreases non-uniformly then the slope of the velocity-time graph will have different values same values zero valves constant valves
16 If the slope of the velocity-time graph increases at constant rate with time, then the body is said to have uniform deceleration uniform negative acceleration average acceleration uniform positive acceleration
17 When a body is moving with uniform positive acceleration, the velocity- time graph is a straight line. Its slope is zero negative positive non-existing
18 The three equation of motions are useful only for linear motion with increasing acceleration line motion with uniform acceleration linear motion with zero acceleration linear motion with varying acceleration
19 A body starting from rest covers a distance of 0.45 Km and acquires a velocity of 300 Kmh-1. its acceleration will be 7.71 m s<sup>-2</sup> 0.5m s<sup>-2</sup> 0.15m s<sup>-2</sup> 0.092m s<sup>-2</sup>
20 The area under line velocity-time graph is numerically equal to the speed of the body acceleration of the body distance covered by the body none of them
21 The slopes of the tangent at any point on the curve gives the value of the average velocity at that point instantaneous velocity at that point average acceleration at that point instantaneous acceleration at that point
22 When body moves with increasing acceleration, its velocity time graph is a straight line horizontal straight line vertical straight line curve
23 Graphs which are used to illustrate the variation of velocity of an object with time are called distance time graphs speed time graphs velocity time graphs acceleration time graphs
24 Bodies failing freely under gravity provide good example of motion under non-uniform acceleration uniform acceleration variable acceleration increasing acceleration
25 The decrease in velocity per unit time is called deceleration acceleration uniform acceleration variable acceleration
26 A body moving with uniform velocity has positive acceleration negative acceleration infinite acceleration zero acceleration
27 If the values of instantaneous and average velocities are equal, the body is said to be moving with uniform acceleration uniform speed variable velocity uniform velocity
28 Acceleration of a body is negative if the velocity of the body is constant increasing decreasing none of them
29 Acceleration of a body is positive, if the velocity of the body is constant increasing decreasing none of them
30 Acceleration of a body at any particular instant during its motion is known as average acceleration uniform acceleration instantaneous acceleration all of them
Download This Set
×