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

A body of mass 5 kg is acted upon by a total change n momentum will be:

Question # 2

According to the law of conservation of linear momentum, the total linear momentum of an isolated system

Question # 3

An object thrown in arbitrary direction in space with an initial velocity and moving freely under gravity will follow

Question # 4

For maximum linear distance of travel, a projectile must be fired at an angle of

Question # 5

The velocity of a body at any instant of its motion is known as

Question # 6

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

Question # 7

A 5 kg mass is falling freely, the force acting on, it will be

Question # 8

The short distance between two points direction from its initial point to final point is called:

Question # 9

An inertial frame of reference is that frame of reference in which

Question # 10

Newton's first law is also called:

Question # 11

If a train traveling at 72 kmph is to be brought to rest in a distance of 200 meters then its retardation should be

Question # 12

One newton is a force that produces an acceleration of 0.5 m/sec2in a body of mass:

Question # 13

A typical rocket ejects the burnt gases at speeds over

Question # 14

A monkey sits on the pan of spring scale kept in an elevator. The reading of the spring scale will be maximum when

Question # 15

The mass of the object is a quantities measure of its

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 If d is the displacement of the body in time t, then its average velocity will be
A. Vav= d x t
B. Vav = t/d
C. Vav = d/t
D. Vav = d/t
2 A body of weight 1 N has a kinetic energy of 1 joule when its speed is:
A. 1.46 m sec-1
B. 2.44 m sec-1
C. 3.42 m sec-1
D. 4.43 m sec-1
3 Which one of the following is dimensionless:
A. Acceleration
B. Velocity
C. Density
D. Angle
4 Acceleration of a body is negative if the velocity of the body is
A. constant
B. increasing
C. decreasing
D. none of them
5 A ball of mass m moving with uniform speed collides elastically with another stationary ball. The incident ball will lose maximum kinetic energy when mass of the stationary ball is
A. m
B. 2 m
C. 4 m
D. Infinity
6 The dimension of linear inertia is:
A. MLT2
B. ML0T-2
C. ML0T0
D. MLT-1
7 In above figures, tell which set of graphs shows that a body is moving with uniform velocity:
A. (i) and (ii)
B. (ii) and (iii)
C. (iii) and (iv)
8 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
A. Unequal
B. Exactly equal
C. Roughly equal
D. Zero
9 A car travels first half distance between two places with a speed of 30 km/h and remaining half with a speed of 50 km/h. The average speed of the car is
A. 37.5 km/h
B. 10 km/h
C. 42 km/h
D. 40 km/h
10 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

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