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

If m means mass of gases objected per second from a rocket and v shows the change in velocity, than mv is named as:

Question # 2

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

Question # 3

In equation F=ma, then mass 'm' is

Question # 4

An object is dropped from a height of 100 m. Its velocity at the moment it touches the ground is:

Question # 5

Flight of rocket in the space is an example of

Question # 6

A dirty carpet is to be cleaned by heating. This is an accordance with____ law of motion:

Question # 7

Two projectiles are fired from the same point with the same speed at angles of projection 60° and 30° respectively. Which one of the following is true?

Question # 8

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

Question # 9

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

Question # 10

Change in momentum is one second is called:

Question # 11

The magnitude of the force producing an acceleration of 10 m/sec2in a body of mass 500 grams is:

Question # 12

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

Question # 13

Biomass includes:

Question # 14


Swimming becomes possible because of______law of motion:

Question # 15

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

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 Two bodies of masses 1 kg and 5 kg are dropped gently form the top of a tower. A a point 20 cm from the ground both the bodies will have the same
A. Momentum
B. Kinetic energy
C. Velocity
D. Total energy
2 The product of force and time is called change in:
A. Momentum
B. Impulse
C. Force
D. Both a and b
3 The sum of the magnitude of two forces acting at a point is 18 and the magnitude of their resultant is 12. If the resultant is at 90° with the force of the smaller magnitude, then their magnitudes are
A. 3, 15
B. 4, 14
C. 5, 13
D. 6, 12
4 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
5 A man sitting in a bus travelling in a direction from west to east with a speed of 40 km/h observes that the rain drops are falling vertically down. To the another man standing on ground the rain will appear
A. To fall vertically down
B. To fall at an angle going from west to east
C. To fall at an angle going from east to west
D. The information given is insufficient to decide the direction of rain
6 The magnitude of the force producing an acceleration of 10 m/sec2in a body of mass 500 grams is:
A. 3 N
B. 4 N
C. 5 N
D. 6 N
7 Which quantity has the same dimension as that of impulse?
A. KE
B. Power
C. Momentum
D. Work
8 Change in momentum is one second called.
A. Impulse
B. Force
C. Energy
D. Work
9 An object is dropped from a height of 100 m. Its velocity at the moment it touches the ground is:
A. 100 m/sec
B. 140 m/sec
C. 1960 m/sec
D. 196 m/sec
10 Swimming becomes possible because of______law of motion.
A. First
B. Second
C. Third
D. None of these

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