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

When a body is moving on a surface, the force of friction is called

Question # 2

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 # 3

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 # 4

Root out the conventional source of energy:

Question # 5

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

Question # 6

Acceleration produced in a body by the force varies

Question # 7

The three equation of motions are useful only for

Question # 8

A change in position of a body from its initial position to its final position is known as

Question # 9

If the water falls from a dam into a turbine wheel 19.6 m below, then the velocity of water at the turbine, is (Take g=9.8 m/s2)

Question # 10

The dimension of linear inertia is:

Question # 11

The SI units of momentum is

Question # 12

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

Question # 13

When two protons are brought closer potential energy of both of them:

Question # 14

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 # 15

A typical rocket ejects the burnt gases at speeds over

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 The direction of the linear momentum is the direction of
A. speed
B. velocity
C. weight
D. none of them
2 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
3 Inertia mass and gravitational mass are
A. opposite
B. identical
C. identical when there is no friction
D. all of them
4 The quantity F x t is called as
A. momentum
B. velocity
C. acceleration
D. impulse
5 A car moves for half of its time at 80 km/h and rest half of time at 40 km/h, The total distance covered is 60 km. What is the average speed of the car?
A. 60 km/hr
B. 80 km/hr
C. 120 km/hr
D. 180 km/hr
6 Biomass includes:
A. Crop residue
B. Natural vegetation
C. Animal dung
D. All of these
7 A dirty carpet is to be cleaned by heating. This is an accordance with____ law of motion:
A. First
B. Second
C. Third
D. None of these
8 The slopes of the tangent at any point on the curve gives the value of the
A. average velocity at that point
B. instantaneous velocity at that point
C. average acceleration at that point
D. instantaneous acceleration at that point
9 When two protons are brought closer potential energy of both of them:
A. Increases
B. Decreases
C. Remains same
D. None of these
10 Which of the following four statements is false?
A. A body can have zero velocity and still be accelerated
B. A body can have a constant velocity and still have a varying speed
C. A body can have a constant speed and still have a varying velocity
D. The direction of the velocity of a body can change when its acceleration is constant

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