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

Which one of the following is dimensionless.

Question # 2

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

Question # 3

The magnitude of the force producing an acceleration of 10 m/sec2 in a body of mass 500 grams is:

Question # 4

When brakes are applied to a fast moving car, the passenger will be thrown:

Question # 5

The displacement coincides with the path of the motion when a body moves is a

Question # 6

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

Question # 7

A lift is moving up with acceleration equal to 1/5 of that due to gravity. The apparent weight of a 60 kg man standing in lift is

Question # 8

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

Question # 9

A body whose momentum is constant must have constant

Question # 10

A ball is dropped from a height of 4.2 meters. To what height will take it rise if there is no loss of KE after rebounding?

Question # 11

Find the total displacement of a body in 8 seconds starting from rest with an acceleration of 20 cm/s2

Question # 12

A motorist travels A to B at a speed at 40 km/h and returns at speed of 60km/h. His average speed will be

Question # 13

In the above figures, tell which set is graphs shows that a body is moving uniform velocity:

Question # 14

Swimming becomes possible because of______law of motion.

Question # 15

A body of weight 1 N has a kinetic energy of 1 joule when its speed is:

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 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
2 When a person jumps off the ground, the reaction force of the ground is
A. greater than the weight of the person
B. smaller than the weight of the person
C. equal to the weight of the person
D. zero
3 The linear momentum of the body is defined as
A. p=ma
B. p=1/2ma
C. p=mv
D. p=1/2mv
4 The decrease in velocity per unit time is called:
A. Variable Acceleration
B. Average Acceleration
C. Retardation
D. None of these
5 When the surfaces are coated with a lubricant, then they
A. Stick to each other
B. Slide upon each other
C. Roll upon each other
D. None of these
6 A particle of mass 0.5 g moving along x-axis is located of x1= 15 m at t1= 5s and x2= 33 m at t2= 13s its average velocity is
A. 6 m s-1
B. 2.45 m s-1
C. 2.25 m s-1
D. 4.45 m s-1
7 The horizontal component of a projectile moving with initial velocity of 500 ms-1at an angle 60° to x-axis is
A. 500 ms-1
B. 1000 ms-1
C. 250 ms-1
D. Zero
8 What must be changing when a body is accelerating uniformly?
A. the force acting on a body
B. the velocity of the body
C. the mass of the body
D. the speed of the body
9 The SI units of momentum is
A. kg m s-2
B. kg ms
C. kg m s2
D. N-s
10 A train is moving with a velocity of 25 m/s and a car is moving behind it by a velocity of 8 m/s in same direction. The relative velocity of train with respect to car is
A. 17 m/s
B. 33 m/s
C. 17.5 m/s
D. none

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