ECAT Pre Engineering Physics Chapter 3 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 3 Motion and Force

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Physics ECAT Pre Engineering Chapter 3 Motion and Force

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Question # 1

Work done along a closed path in a gravitational force is:

Question # 2

Linear momentum is a

Question # 3

Distance covered by a freely falling body in 2 sec will be

Question # 4

For a moving body, at any instant of time

Question # 5

If the slope of the velocity-time graph increases at constant rate with time, then the body is said to have

Question # 6

A certain force gives an acceleration of 2 m/sec2 to a body if mass 5 kg. The same force would give a 29 kg object an acceleration of:

Question # 7

The instantaneous velocity is define as the limiting value of Δd/Δt on the time intervalΔt approaches to

Question # 8

A mass of 5kg moves with an acceleration of 10m s-2force applied is

Question # 9

Suppose the water flows out from a pipe at 3kg s-1and its velocity changes from 5m s-1to zero on striking the wall, then the force exerted by water on wall will be

Question # 10

A body of mass 1.0 kg is falling with an acceleration of 10 m/s2. Its apparent weight will be (g=10 m/s2)

Question # 11

If an iron ball and a wooden ball of the same radius was released from a height 'h' in vacuum, then time taken by both of them to reach ground will be

Question # 12

Angular momentum

Question # 13

The mass of the object is a quantities measure of its

Question # 14

The entity which measures the quantity of motion in a body is called

Question # 15

The slopes of the tangent at any point on the curve gives the value of the

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 When a force is applied on a body, several effects are possible Which of the following effect could not occur?
A. the body rotates
B. the body speeds up
C. the mass of the body decreases
D. the body changes its direction
2 The second law gives the relationship between
A. mass and velocity
B. force and acceleration
C. velocity and acceleration
D. mass and weight
3 The velocity given to a body to go out of the influence of earth's gravity is known as:
A. Terminal velocity
B. Orbital velocity
C. Escape velocity
D. None of these
4 A force of 50 dynes is acted on a body of mass 5 g which is at rest, for an interval of 3 seconds, then impulse is
A. 0.15 x 10-3Ns
B. 0.98 x 10-3Ns
C. 1.5 x 10-3Ns
D. 2.5 x 10-3Ns
5
Swimming becomes possible because of______law of motion:
A. First
B. Second
C. Third
D. None of these
6 The product of force and time is called change in:
A. Momentum
B. Impulse
C. Force
D. Both a and b
7 At the top of the trajectory of a projectile the acceleration is
A. The maximum
B. The minimum
C. Zero
D. g
8 The linear momentum of the body is defined as
A. p=ma
B. p=1/2ma
C. p=mv
D. p=1/2mv
9 To get a resultant displacement of 10 m, two displacement vectors of magnitude 6 m and 8 m should be combined
A. Parallel
B. Antiparallel
C. At angle 60°
D. Perpendicular to each other
10 By which velocity a ball be projected vertically so that the distance covered by it in 5th seconds is twice the distance it covers in its 6th second ( g=10m/s2)
A. 58.8 m/s
B. 49 m/s
C. 65 m/s
D. 19.6 m/s

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