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

During the projectile motion, the horizontal component of velocity

Question # 2

Rate of change of momentum is called

Question # 3

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

Question # 4

The mass of the object is a quantities measure of its

Question # 5

A dirty carpet is to be cleaned by heating. This is in according with______law of motion.

Question # 6

If rope of lift breaks suddenly. The tension exerted by the surface of lift is (a=Acceleration of lift)

Question # 7

Change in momentum is one second is called:

Question # 8

The decrease in velocity per unit time is called

Question # 9

A certain force gives an acceleration of 2 m/sec2to a body mass 5 kg. The same force would give a 20 kg object an acceleration of:

Question # 10

At the top of the trajectory of a projectile the acceleration is

Question # 11

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

Question # 12

When a shell explodes in mid-air, its fragments fly off in

Question # 13

The vertical and horizontal range will be equal id angle of projection is

Question # 14

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

Question # 15

The direction of velocity is along the direction of

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 If the values of instantaneous and average velocities are equal, the body is said to be moving with
A. uniform acceleration
B. uniform speed
C. variable velocity
D. uniform velocity
2 Acceleration of a body is negative if the velocity of the body is
A. constant
B. increasing
C. decreasing
D. none of them
3 Acceleration produced in a body by a force varies
A. inversely as the applied force
B. directly as the applied force
C. directly as the mass of the body
D. none of them
4 A typical rocket consists of fuel
A. more than 60% of launch mass
B. less than 60% of launch mass
C. less than 80% of launch mass
D. more than 80% of launch mass
5 An object thrown in arbitrary direction in space with an initial velocity and moving freely under gravity will follow
A. a circular path
B. a straight line
C. a hyperbola
D. a parabola
6 The dimension of linear inertia is:
A. MLT2
B. ML0T-2
C. ML0T0
D. MLT-1
7 The linear momentum of the body is defined as
A. p=ma
B. p=1/2ma
C. p=mv
D. p=1/2mv
8 When a horse pulls a cart, the force that makes the horse run forward is the force exerted by
A. The horse on the ground
B. The horse on the cart
C. The ground on the horse
D. The ground on the cart
9 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
A. 40 km/h
B. 48 km/h
C. 50 km/h
D. 60 km/h
10 Work done along a closed path in a gravitational field is:
A. Maximum
B. Minimum
C. Zero
D. Unity

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